Roland Bammer

Fast Automatic Detection of Large Vessel Occlusions on CT Angiography

Shalini Amukotuwa, Matus Straka, Seena Dehkharghani, Roland Bammer

Journal article  |  2019  |  Stroke

Automated Calculation of Alberta Stroke Program Early CT Score Validation in Patients With Large Hemispheric Infarct

Gregory W Albers, Michael J Wald, Michael Mlynash, Juergen Endres, Roland Bammer, Matus Straka, Andreas Maier, Holly E Hinson, Kevin N Sheth, W Taylor Kimberly, Bradley J Molyneaux

Journal article  |  2019  |  Stroke

Background and Purpose- We compared the Alberta Stroke Program Early CT Score (ASPECTS), calculated using a machine learning-based..

Cerebral Blood Flow Predicts the Infarct Core: New Insights From Contemporaneous Diffusion and Perfusion Imaging

Shalini Amukotuwa, Matus Straka, Didem Aksoy, Nancy Fischbein, Patricia Desmond, Gregory Albers, Roland Bammer

Journal article  |  2019  |  Stroke

Automated Detection of Intracranial Large Vessel Occlusions on Computed Tomography Angiography: A Single Center Experience

Shalini A Amukotuwa, Matus Straka, Heather Smith, Ronil V Chandra, Seena Dehkharghani, Nancy J Fischbein, Roland Bammer

Journal article  |  2019  |  Stroke

Comparison of T2*GRE and DSC-PWI for hemorrhage detection in acute ischemic stroke patients: Pooled analysis of the EPITHET, DEFUSE 2, and SENSE 3 stroke studies

Shalini A Amukotuwa, Nancy J Fischbein, Gregory W Albers, Stephen Davis, Geoffrey A Donnan, Jalal B Andre, Roland Bammer

Journal article  |  2019  |  International Journal of Stroke

Rigid Motion Correction for Brain PET/MR Imaging Using Optical Tracking

Matthew G Spangler-Bickell, Mohammad Mehdi Khalighi, Charlotte Hoo, Phillip Scott DiGiacomo, Julian Maclaren, Murat Aksoy, Dan Rettmann, Roland Bammer, Greg Zaharchuk, Michael Zeineh, Floris Jansen

Journal article  |  2019  |  IEEE Transactions on Radiation and Plasma Medical Sciences

Close-range Feature-based Head Motion Tracking for MRI and PET-MRI

D Henry, R Fulton, J Maclaren, M Aksoy, R Bammer, A Kyme

Conference Proceedings  |  2018  |  2018 IEEE Nuclear Science Symposium and Medical Imaging Conference Proceedings (NSS/MIC)

Time From Imaging to Endovascular Reperfusion Predicts Outcome in Acute Stroke

Jenny P Tsai, Michael Mlynash, Soren Christensen, Stephanie Kemp, Sun Kim, Nishant K Mishra, Christian Federau, Raul G Nogueira, Tudor G Jovin, Thomas G Devlin, Naveed Akhtar, Dileep R Yavagal, Roland Bammer, Matus Straka, Gregory Zaharchuk, Michael P Marks, Gregory W Albers, Maarten G Lansberg

Journal article  |  2018  |  Stroke

Prospective motion correction using coil-mounted cameras: Cross-calibration considerations

Julian Maclaren, Murat Aksoy, Melvyn B Ooi, Benjamin Zahneisen, Roland Bammer

Journal article  |  2018  |  Magnetic Resonance in Medicine

Arterial Spin-Labeling Improves Detection of Intracranial Dural Arteriovenous Fistulas with MRI

SA Amukotuwa, MP Marks, G Zaharchuk, F Calamante, R Bammer, N Fischbein

Journal article  |  2018  |  American Journal of Neuroradiology

Thrombectomy for Stroke at 6 to 16 Hours with Selection by Perfusion Imaging

GW Albers, MP Marks, S Kemp, S Christensen, JP Tsai, S Ortega-Gutierrez, RA McTaggart, MT Torbey, M Kim-Tenser, T Leslie-Mazwi, A Sarraj, SE Kasner, SA Ansari, SD Yeatts, S Hamilton, M Mlynash, JJ Heit, G Zaharchuk, S Kim, J Carrozzella, et al.

Journal article  |  2018  |  New England Journal of Medicine

A Comparison of Relative Time to Peak and Tmax for Mismatch-Based Patient Selection

Anke Wouters, Soren Christensen, Matus Straka, Michael Mlynash, John Liggins, Roland Bammer, Vincent Thijs, Robin Lemmens, Gregory W Albers, Maarten G Lansberg

Journal article  |  2017  |  Frontiers in Neurology

A multicenter randomized controlled trial of endovascular therapy following imaging evaluation for ischemic stroke (DEFUSE 3)

Gregory W Albers, Maarten G Lansberg, Stephanie Kemp, Jenny P Tsai, Phil Lavori, Soren Christensen, Michael Mlynash, Sun Kim, Scott Hamilton, Sharon D Yeatts, Yuko Palesch, Roland Bammer, Joe Broderick, Michael P Marks

Journal article  |  2017  |  International Journal of Stroke

Prediction of final infarct volume on subacute MRI by quantifying cerebral edema in ischemic stroke

Aaryani Tipirneni-Sajja, Soren Christensen, Matus Straka, Manabu Inoue, Maarten G Lansberg, Michael Mlynash, Roland Bammer, Mark W Parsons, Geoffrey A Donnan, Stephen M Davis, Gregory W Albers

Journal article  |  2017  |  Journal of Cerebral Blood Flow & Metabolism

Ex-tended hybrid-space SENSE for EPI: Off-resonance and eddy current corrected joint interleaved blip-up/down reconstruction

Benjamin Zahneisen, Murat Aksoy, Julian Maclaren, Christian Wuerslin, Roland Bammer

Journal article  |  2017  |  NeuroImage

Prospective motion correction for 3D pseudo-continuous arterial spin labeling using an external optical tracking system

Murat Aksoy, Julian Maclaren, Roland Bammer

Journal article  |  2017  |  Magnetic Resonance Imaging

Computed Tomographic Perfusion to Predict Response to Recanalization in Ischemic Stroke

Maarten G Lansberg, Soren Christensen, Stephanie Kemp, Michael Mlynash, Nishant Mishra, Christian Federau, Jenny P Tsai, Sun Kim, Raul G Nogueria, Tudor Jovin, Thomas G Devlin, Naveed Akhtar, Dileep R Yavagal, Diogo Haussen, Seena Dehkharghani, Roland Bammer, Matus Straka, Greg Zaharchuk, Michael P Marks, Gregory W Albers

Journal article  |  2017  |  Annals of Neurology

Reducing Functional MR Imaging Acquisition Times by Optimizing Workflow

Wilson B Chwang, Michael Iv, Jason Smith, Aleksandrs Kalnins, Jake Mickelsen, Roland Bammer, Dominik Fleischmann, David B Larson, Max Wintermark, Michael Zeineh

Journal article  |  2017  |  RadioGraphics

Optimal Computed Tomographic Perfusion Scan Duration for Assessment of Acute Stroke Lesion Volumes

Aimen S Kasasbeh, Soren Christensen, Matus Straka, Nishant Mishra, Michael Mlynash, Roland Bammer, Gregory W Albers, Maarten G Lansberg

Journal article  |  2016  |  Stroke

A benchmarking tool to evaluate computer tomography perfusion infarct core predictions against a DWI standard

Carlo W Cereda, Soren Christensen, Bruce CV Campbell, Nishant K Mishra, Michael Mlynash, Christopher Levi, Matus Straka, Max Wintermark, Roland Bammer, Gregory W Albers, Mark W Parsons, Maarten G Lansberg

Journal article  |  2016  |  Journal of Cerebral Blood Flow & Metabolism

Performance of CT ASPECTS and Collateral Score in Risk Stratification: Can Target Perfusion Profiles Be Predicted without Perfusion Imaging?

S Dehkharghani, R Bammer, M Straka, M Bowen, JW Allen, S Rangaraju, J Kang, T Gleason, C Brasher, F Nahab

Journal article  |  2016  |  American Journal of Neuroradiology

Detection of Cortical Venous Drainage and Determination of the Borden Type of Dural Arteriovenous Fistula by Means of 3D Pseudocontinuous Arterial Spin-Labeling MRI

Shalini A Amukotuwa, Jeremy J Heit, Michael P Marks, Nancy Fischbein, Roland Bammer

Journal article  |  2016  |  American Journal of Roentgenology

Acute Stroke Imaging Research Roadmap III Imaging Selection and Outcomes in Acute Stroke Reperfusion Clinical Trials Consensus Recommendations and Further Research Priorities

Steven J Warach, Marie Luby, Gregory W Albers, Roland Bammer, Andrew Bivard, Bruce CV Campbell, Colin Derdeyn, Jeremy J Heit, Pooja Khatri, Maarten G Lansberg, David S Liebeskind, Charles BLM Majoie, Michael P Marks, Bijoy K Menon, Keith W Muir, Mark W Parsons, Achala Vagal, Albert J Yoo, Andrei V Alexandrov, Jean-Claude Baron, et al.

Journal article  |  2016  |  Stroke

Trade-off between angular and spatial resolutions in in vivo fiber tractography

Sjoerd B Vos, Murat Aksoy, Zhaoying Han, Samantha J Holdsworth, Julian Maclaren, Max A Viergever, Alexander Leemans, Roland Bammer

Journal article  |  2016  |  NeuroImage

Plasticity of left perisylvian white-matter tracts is associated with individual differences in math learning

Dietsje Jolles, Demian Wassermann, Ritika Chokhani, Jennifer Richardson, Caitlin Tenison, Roland Bammer, Lynn Fuchs, Kaustubh Supekar, Vinod Menon

Journal article  |  2016  |  Brain Structure and Function

Ischemic Core and Hypoperfusion Volumes Predict Infarct Size in SWIFT PRIME

Gregory W Albers, Mayank Goyal, Reza Jahan, Alain Bonafe, Hans-Christoph Diener, Elad I Levy, Vitor M Pereira, Christophe Cognard, David J Cohen, Werner Hacke, Olav Jansen, Tudor G Jovin, Heinrich P Mattle, Raul G Nogueira, Adnan H Siddiqui, Dileep R Yavagal, Blaise W Baxter, Thomas G Devlin, Demetrius K Lopes, Vivek K Reddy, et al.

Journal article  |  2016  |  Annals of Neurology

Survivor's guide to DTI acquisition

E Peterson, R Bammer

Book Chapter  |  2016

The association between lesion location and functional outcome after ischemic stroke

Nawaf Yassi, Leonid Churilov, Bruce CV Campbell, Gagan Sharma, Roland Bammer, Patricia M Desmond, Mark W Parsons, Gregory W Albers, Geoffrey A Donnan, Stephen M Davis, EPITHET Investigators

Journal article  |  2015  |  International Journal of Stroke

Yield of CT perfusion for the evaluation of transient ischaemic attack

Jonathan T Kleinman, Michael Mlynash, Greg Zaharchuk, Alyshia A Ogdie, Matus Straka, Maarten G Lansberg, Neil E Schwartz, Paul Singh, Stephanie Kemp, Roland Bammer, Gregory W Albers, Jean-Marc Olivot

Journal article  |  2015  |  International Journal of Stroke

Diffusion Tensor Imaging of TBI: Potentials and Challenges.

David B Douglas, Michael Iv, Pamela K Douglas, Ariana Anderson, Sjoerd B Vos, Roland Bammer, Michael Zeineh, Max Wintermark

Journal article  |  2015  |  Topics in Magnetic Resonance Imaging

Neuroimaging plays a critical role in the setting in traumatic brain injury (TBI). Diffusion tensor imaging (DTI) is an advanced m..

Low peak power multiband spokes pulses for B-1( ) inhomogeneity-compensated simultaneous multislice excitation in high field MRI

Anuj Sharma, Roland Bammer, V Andrew Stenger, William A Grissom

Journal article  |  2015  |  Magnetic Resonance in Medicine

Response to endovascular reperfusion is not time-dependent in patients with salvageable tissue

Maarten G Lansberg, Carlo W Cereda, Michael Mlynash, Nishant K Mishra, Manabu Inoue, Stephanie Kemp, Soren Christensen, Matus Straka, Greg Zaharchuk, Michael P Marks, Roland Bammer, Gregory W Albers

Journal article  |  2015  |  Neurology

Contact-free physiological monitoring using a markerless optical system

Julian Maclaren, Murat Aksoy, Roland Bammer

Journal article  |  2015  |  Magnetic Resonance in Medicine

Performance and Predictive Value of a User-Independent Platform for CT Perfusion Analysis: Threshold-Derived Automated Systems Outperform Examiner-Driven Approaches in Outcome Prediction of Acute Ischemic Stroke

S Dehkharghani, R Bammer, M Straka, LS Albin, O Kass-Hout, JW Allen, S Rangaraju, D Qiu, MJ Winningham, F Nahab

Journal article  |  2015  |  American Journal of Neuroradiology

A score based on age and DWI volume predicts poor outcome following endovascular treatment for acute ischemic stroke

John TP Liggins, Albert J Yoo, Nishant K Mishra, Hayley M Wheeler, Matus Straka, Thabele M Leslie-Mazwi, Zeshan A Chaudhry, Stephanie Kemp, Michael Mlynash, Roland Bammer, Gregory W Albers, Maarten G Lansberg

Journal article  |  2015  |  International Journal of Stroke

The growth rate of early DWI lesions is highly variable and associated with penumbral salvage and clinical outcomes following endovascular reperfusion

Hayley M Wheeler, Michael Mlynash, Manabu Inoue, Aaryani Tipirnini, John Liggins, Roland Bammer, Maarten G Lansberg, Stephanie Kemp, Greg Zaharchuk, Matus Straka, Gregory W Albers

Journal article  |  2015  |  International Journal of Stroke

Worse stroke outcome in atrial fibrillation is explained by more severe hypoperfusion, infarct growth, and hemorrhagic transformation

Hans TH Tu, Bruce CV Campbell, Soren Christensen, Patricia M Desmond, Deidre A De Silva, Mark W Parsons, Leonid Churilov, Maarten G Lansberg, Michael Mlynash, Jean-Marc Olivot, Matus Straka, Roland Bammer, Gregory W Albers, Geoffrey A Donnan, Stephen M Davis

Journal article  |  2015  |  International Journal of Stroke

Reperfusion of Very Low Cerebral Blood Volume Lesion Predicts Parenchymal Hematoma After Endovascular Therapy

Nishant K Mishra, Soren Christensen, Anke Wouters, Bruce CV Campbell, Matus Straka, Michael Mlynash, Stephanie Kemp, Carlo W Cereda, Roland Bammer, Michael P Marks, Gregory W Albers, Maarten G Lansberg

Journal article  |  2015  |  Stroke

Interhospital variation in reperfusion rates following endovascular treatment for acute ischemic stroke

John TP Liggins, Michael Mlynash, Tudor G Jovin, Matus Straka, Stephanie Kemp, Roland Bammer, Michael P Marks, Gregory W Albers, Maarten G Lansberg

Journal article  |  2015  |  Journal of NeuroInterventional Surgery

Cerebral Blood Flow Changes in Glioblastoma Patients Undergoing Bevacizumab Treatment Are Seen in Both Tumor and Normal Brain

Jalal B Andre, Seema Nagpal, Daniel S Hippe, Ali C Ravanpay, Heiko Schmiedeskamp, Roland Bammer, Gerald J Palagallo, Lawrence Recht, Greg Zaharchuk

Journal article  |  2015  |  The Neuroradiology Journal

Apparent diffusion coefficient threshold for delineation of ischemic core

Archana Purushotham, Bruce CV Campbell, Matus Straka, Michael Mlynash, Jean-Marc Olivot, Roland Bammer, Stephanie M Kemp, Gregory W Albers, Maarten G Lansberg

Journal article  |  2015  |  International Journal of Stroke

Effect of Number of Acquisitions in Diffusion Tensor Imaging of the Pediatric Brain: Optimizing Scan Time and Diagnostic Experience

Salil Soman, Samantha J Holdsworth, Stefan Skare, Jalal B Andre, Anh T Van, Murat Aksoy, Roland Bammer, Jarrett Rosenberg, Patrick D Barnes, Kristen W Yeom

Journal article  |  2015  |  Journal of Neuroimaging

A model-based reconstruction for undersampled radial spin-echo DTI with variational penalties on the diffusion tensor

Florian Knoll, Jose G Raya, Rafael O Halloran, Steven Baete, Eric Sigmund, Roland Bammer, Tobias Block, Ricardo Otazo, Daniel K Sodickson

Journal article  |  2015  |  NMR in Biomedicine

Real-Time Correction of Rigid Body Motion-Induced Phase Errors for Diffusion-Weighted Steady-State Free Precession Imaging

Rafael O'Halloran, Murat Aksoy, Eric Aboussouan, Eric Peterson, Anh Van, Roland Bammer

Journal article  |  2015  |  Magnetic Resonance in Medicine

Slab Profile Encoding (PEN) for Minimizing Slab Boundary Artifact in Three-Dimensional Diffusion-Weighted Multislab Acquisition

Anh T Van, Murat Aksoy, Samantha J Holdsworth, Daniel Kopeinigg, Sjoerd B Vos, Roland Bammer

Journal article  |  2015  |  Magnetic Resonance in Medicine

Correlation of AOL recanalization, TIMI reperfusion and TICI reperfusion with infarct growth and clinical outcome

Michael P Marks, Maarten G Lansberg, Michael Mlynash, Stephanie Kemp, Ryan McTaggart, Greg Zaharchuk, Roland Bammer, Gregory W Albers

Journal article  |  2014  |  Journal of NeuroInterventional Surgery

Angiographic outcome of endovascular stroke therapy correlated with MR findings, infarct growth, and clinical outcome in the DEFUSE 2 trial

Michael P Marks, Maarten G Lansberg, Michael Mlynash, Stephanie Kemp, Ryan A McTaggart, Greg Zaharchuk, Roland Bammer, Gregory W Albers

Journal article  |  2014  |  International Journal of Stroke

Time-Resolved Angiography Using InfLow Subtraction (TRAILS)

Daniel Kopeinigg, Roland Bammer

Journal article  |  2014  |  Magnetic Resonance in Medicine

Diffusion-Weighted Imaging with Dual-Echo Echo-Planar Imaging for Better Sensitivity to Acute Stroke

SJ Holdsworth, KW Yeom, MU Antonucci, JB Andre, J Rosenberg, M Aksoy, M Straka, NJ Fischbein, R Bammer, ME Moseley, G Zaharchuk, S Skare

Journal article  |  2014  |  American Journal of Neuroradiology

Comparison of Magnetic Resonance Imaging Mismatch Criteria to Select Patients for Endovascular Stroke Therapy

Nishant K Mishra, Gregory W Albers, Soren Christensen, Michael Marks, Scott Hamilton, Matus Straka, John TP Liggins, Stephanie Kemp, Michael Mlynash, Roland Bammer, Maarten G Lansberg

Journal article  |  2014  |  Stroke

Effect of Collateral Blood Flow on Patients Undergoing Endovascular Therapy for Acute Ischemic Stroke

Michael P Marks, Maarten G Lansberg, Michael Mlynash, Jean-Marc Olivot, Matus Straka, Stephanie Kemp, Ryan McTaggart, Manabu Inoue, Greg Zaharchuk, Roland Bammer, Gregory W Albers

Journal article  |  2014  |  Stroke

Hypoperfusion Intensity Ratio Predicts Infarct Progression and Functional Outcome in the DEFUSE 2 Cohort

Jean Marc Olivot, Michael Mlynash, Manabu Inoue, Michael P Marks, Hayley M Wheeler, Stephanie Kemp, Matus Straka, Gregory Zaharchuk, Roland Bammer, Maarten G Lansberg, Gregory W Albers

Journal article  |  2014  |  Stroke

Early Diffusion-Weighted Imaging Reversal After Endovascular Reperfusion Is Typically Transient in Patients Imaged 3 to 6 Hours After Onset

Manabu Inoue, Michael Mlynash, Soren Christensen, Hayley M Wheeler, Matus Straka, Aaryani Tipirneni, Stephanie M Kemp, Greg Zaharchuk, Jean-Marc Olivot, Roland Bammer, Maarten G Lansberg, Gregory W Albers

Journal article  |  2014  |  Stroke

Patients with single distal MCA perfusion lesions have a high rate of good outcome with or without reperfusion

Robin Lemmens, Soren Christensen, Matus Straka, Deidre A De Silva, Michael Mlynash, Bruce CV Campbell, Roland Bammer, Jean-Marc Olivot, Patricia Desmond, Michael P Marks, Stephen M Davis, Geoffrey A Donnan, Gregory W Albers, Maarten G Lansberg

Journal article  |  2014  |  International Journal of Stroke

Susceptibility Artifacts

EU Saritas, SJ Holdsworth, R Bammer

Book Chapter  |  2014

In Vivo Investigation of Restricted Diffusion in the Human Brain with Optimized Oscillating Diffusion Gradient Encoding

Anh T Van, Samantha J Holdsworth, Roland Bammer

Journal article  |  2014  |  Magnetic Resonance in Medicine

Reliability of brain volume measurements: A test-retest dataset

Julian Maclaren, Zhaoying Han, Sjoerd B Vos, Nancy Fischbein, Roland Bammer

Journal article  |  2014  |  Scientific Data

Improved T2*Imaging without Increase in Scan Time: SWI Processing of 2D Gradient Echo

S Soman, SJ Holdsworth, PD Barnes, J Rosenberg, JB Andre, R Bammer, KW Yeom

Journal article  |  2013  |  American Journal of Neuroradiology

High-resolution cerebral blood volume imaging in humans using the blood pool contrast agent ferumoxytol

Thomas Christen, Wendy Ni, Deqiang Qiu, Heiko Schmiedeskamp, Roland Bammer, Michael Moseley, Greg Zaharchuk

Journal article  |  2013  |  Magnetic Resonance in Medicine

Prospective motion correction using inductively coupled wireless RF coils

Melvyn B Ooi, Murat Aksoy, Julian Maclaren, Ronald D Watkins, Roland Bammer

Journal article  |  2013  |  Magnetic Resonance in Medicine

Acute Stroke Imaging Research Roadmap II

Max Wintermark, Gregory W Albers, Joseph P Broderick, Andrew M Demchuk, Jochen B Fiebach, Jens Fiehler, James C Grotta, Gary Houser, Tudor G Jovin, Kennedy R Lees, Michael H Lev, David S Liebeskind, Marie Luby, Keith W Muir, Mark W Parsons, Ruediger von Kummer, Joanna M Wardlaw, Ona Wu, Albert J Yoo, Andrei V Alexandrov, et al.

Journal article  |  2013  |  Stroke

Comparison of the response to endovascular reperfusion in relation to site of arterial occlusion

Robin Lemmens, Michael Mlynash, Matus Straka, Stephanie Kemp, Roland Bammer, Michael P Marks, Gregory W Albers, Maarten G Lansberg

Journal article  |  2013  |  Neurology

3D isotropic high-resolution diffusion-weighted MRI of the whole brain with a motion-corrected steady-state free precession sequence

RL O'Halloran, M Aksoy, AT Van, R Bammer

Journal article  |  2013  |  Magnetic Resonance in Medicine

Impact of Diffusion-Weighted Imaging Lesion Volume on the Success of Endovascular Reperfusion Therapy

Jean-Marc Olivot, Pascal J Mosimann, Julien Labreuche, Manabu Inoue, Elena Meseguer, Jean-Philippe Desilles, Aymeric Rouchaud, Isabelle F Klein, Matus Straka, Roland Bammer, Michael Mlynash, Pierre Amarenco, Gregory W Albers, Mikael Mazighi

Journal article  |  2013  |  Stroke

Clinical Outcomes Strongly Associated With the Degree of Reperfusion Achieved in Target Mismatch Patients Pooled Data from the Diffusion and Perfusion Imaging Evaluation for Understanding Stroke Evolution Studies

Manabu Inoue, Michael Mlynash, Matus Straka, Stephanie Kemp, Tudor G Jovin, Aaryani Tipirneni, Scott A Hamilton, Michael P Marks, Roland Bammer, Maarten G Lansberg, Gregory W Albers

Journal article  |  2013  |  Stroke

Effect of Remote Ischemic Preconditioning on Phosphorylated Protein Signaling in Children Undergoing Tetralogy of Fallot Repair: A Randomized Controlled Trial

Salvatore Pepe, Norman Y Liaw, Michele Hepponstall, Freya L Sheeran, Matthew S Yong, Yves d'Udekem, Michael M Cheung, Igor E Konstantinov

Journal article  |  2013  |  Journal of the American Heart Association

Prospective optical motion correction for 3D time-of-flight angiography

Daniel Kopeinigg, Murat Aksoy, Christoph Forman, Matus Straka, Danielle Seaman, Jarrett Rosenberg, Dominik Fleischmann, Joachim Hornegger, Roland Bammer

Journal article  |  2013  |  Magnetic Resonance in Medicine

Magnetic Resonance Imaging Profile of Blood-Brain Barrier Injury in Patients With Acute Intracerebral Hemorrhage

Didem Aksoy, Roland Bammer, Michael Mlynash, Chitra Venkatasubramanian, Irina Eyngorn, Ryan W Snider, Sandeep N Gupta, Rashmi Narayana, Nancy Fischbein, Christine AC Wijman

Journal article  |  2013  |  Journal of the American Heart Association

ToF/RGB Sensor Fusion for 3-D Endoscopy

Sven Haase, Christoph Forman, Thomas Kilgus, Roland Bammer, Lena Maier-Hein, Joachim Hornegger

Journal article  |  2013  |  Current Medical Imaging Reviews

Simultaneous perfusion and permeability measurements using combined spin- and gradient-echo MRI

Heiko Schmiedeskamp, Jalal B Andre, Matus Straka, Thomas Christen, Seema Nagpal, Lawrence Recht, Reena P Thomas, Greg Zaharchuk, Roland Bammer

Journal article  |  2013  |  Journal of Cerebral Blood Flow & Metabolism

Comparison of Readout-Segmented Echo-Planar Imaging (EPI) and Single-Shot EPI in Clinical Application of Diffusion-Weighted Imaging of the Pediatric Brain

Kristen W Yeom, Samantha J Holdsworth, Anh T Van, Michael Iv, Stefan Skare, Robert M Lober, Roland Bammer

Journal article  |  2013  |  American Journal of Roentgenology

Advanced imaging improves prediction of hemorrhage after stroke thrombolysis

Bruce CV Campbell, Soren Christensen, Mark W Parsons, Leonid Churilov, Patricia M Desmond, P Alan Barber, Kenneth S Butcher, Christopher R Levi, Deidre A De Silva, Maarten G Lansberg, Michael Mlynash, Jean-Marc Olivot, Matus Straka, Roland Bammer, Gregory W Albers, Geoffrey A Donnan, Stephen M Davis

Journal article  |  2013  |  Annals of Neurology

Image domain propeller fast spin echo

Stefan Skare, Samantha J Holdsworth, Anders Lilja, Roland Bammer

Journal article  |  2013  |  Magnetic Resonance Imaging

Combined prospective and retrospective correction to reduce motion-induced image misalignment and geometric distortions in EPI

Melvyn B Ooi, Jordan Muraskin, Xiaowei Zou, William J Thomas, Sascha Krueger, Murat Aksoy, Roland Bammer, Truman R Brown

Journal article  |  2013  |  Magnetic Resonance in Medicine

Early Diffusion-Weighted Imaging and Perfusion-Weighted Imaging Lesion Volumes Forecast Final Infarct Size in DEFUSE 2

Hayley M Wheeler, Michael Mlynash, Manabu Inoue, Aaryani Tipirneni, John Liggins, Greg Zaharchuk, Matus Straka, Stephanie Kemp, Roland Bammer, Maarten G Lansberg, Gregory W Albers

Journal article  |  2013  |  Stroke

Predicting Hemorrhagic Transformation in Ischemic Stroke - Very Low Cerebral Blood Volume versus Permeability Analysis

Bruce C Campbell, Soren Christensen, Matus Straka, Michael Mlynash, Gagan Sharma, Mark W Parsons, Geoffrey A Donnan, Stephen M Davis, Roland Bammer, Michael P Marks, Maarten G Lansberg, Gregory W Albers

Conference Proceedings  |  2013  |  STROKE

Comparison of Automated Whole Brain CT Perfusion Analysis with Perfusion-Diffusion MRI in Ischemic Stroke

Bruce C Campbell, Soren Christensen, Nawaf Yassi, Gagan Sharma, Andrew Bivard, LongTin Lin, Christopher R Levi, Patricia M Desmond, Geoffrey A Donnan, Matus Straka, Maarten G Lansberg, Roland Bammer, Gregory W Albers, Stephen M Davis, Mark W Parsons

Conference Proceedings  |  2013  |  STROKE

The Effects of Alteplase 3 to 6 Hours After Stroke in the EPITHET-DEFUSE Combined Dataset Post Hoc Case-Control Study

Toshiyasu Ogata, Soren Christensen, Yoshinari Nagakane, Henry Ma, Bruce CV Campbell, Leonid Churilov, Maarten G Lansberg, Matus Straka, Deidre A De Silva, Michael Mlynash, Roland Bammer, Jean-Marc Olivot, Patricia M Desmond, Gregory W Albers, Stephen M Davis, Geoffrey A Donnan

Journal article  |  2013  |  Stroke

ToF/RGB sensor fusion for augmented 3D endoscopy using a fully automatic calibration scheme

S Haase, C Forman, T Kilgus, R Bammer, L Maier-Hein, J Hornegger

Conference Proceedings  |  2012  |  Informatik aktuell

Diffusion weighted vertical gradient and spin echo

Mathias Engstrom, Roland Bammer, Stefan Skare

Journal article  |  2012  |  Magnetic Resonance in Medicine

Functional Brain Basis of Hypnotizability

Fumiko Hoeft, John DE Gabrieli, Susan Whitfield-Gabrieli, Brian W Haas, Roland Bammer, Vinod Menon, David Spiegel

Journal article  |  2012  |  Archives of General Psychiatry

Diffusion tensor imaging (DTI) with retrospective motion correction for large-scale pediatric imaging

Samantha J Holdsworth, Murat Aksoy, Rexford D Newbould, Kristen Yeom, Anh T Van, Melvyn B Ooi, Patrick D Barnes, Roland Bammer, Stefan Skare

Journal article  |  2012  |  Journal of Magnetic Resonance Imaging

MRI profile and response to endovascular reperfusion after stroke (DEFUSE 2): a prospective cohort study

Maarten G Lansberg, Matus Straka, Stephanie Kemp, Michael Mlynash, Lawrence R Wechsler, Tudor G Jovin, Michael J Wilder, Helmi L Lutsep, Todd J Czartoski, Richard A Bernstein, Cherylee WJ Chang, Steven Warach, Franz Fazekas, Manabu Inoue, Aaryani Tipirneni, Scott A Hamilton, Greg Zaharchuk, Michael P Marks, Roland Bammer, Gregory W Albers

Journal article  |  2012  |  The Lancet Neurology

Patients With the Malignant Profile Within 3 Hours of Symptom Onset Have Very Poor Outcomes After Intravenous Tissue-Type Plasminogen Activator Therapy

Manabu Inoue, Michael Mlynash, Matus Straka, Maarten G Lansberg, Greg Zaharchuk, Roland Bammer, Gregory W Albers

Journal article  |  2012  |  Stroke

Ultra-high resolution diffusion tensor imaging of the microscopic pathways of the medial temporal lobe

Michael M Zeineh, Samantha Holdsworth, Stefan Skare, Scott W Atlas, Roland Bammer

Journal article  |  2012  |  NeuroImage

Measuring brain oxygenation in humans using a multiparametric quantitative blood oxygenation level dependent MRI approach

Thomas Christen, Heiko Schmiedeskamp, Matus Straka, Roland Bammer, Greg Zaharchuk

Journal article  |  2012  |  Magnetic Resonance in Medicine

Clinical Assessment of Standard and Generalized Autocalibrating Partially Parallel Acquisition Diffusion Imaging: Effects of Reduction Factor and Spatial Resolution

JB Andre, G Zaharchuk, NJ Fischbein, M Augustin, S Skare, M Straka, J Rosenberg, MG Lansberg, S Kemp, CAC Wijman, GW Albers, NE Schwartz, R Bammer

Journal article  |  2012  |  American Journal of Neuroradiology

Model for the correction of motion-induced phase errors in multishot diffusion-weighted-MRI of the head: Are cardiac-motion-induced phase errors reproducible from beat-to-beat?

RL O'Halloran, S Holdsworth, M Aksoy, R Bammer

Journal article  |  2012  |  Magnetic Resonance in Medicine

CBF measurements using multidelay pseudocontinuous and velocity-selective arterial spin labeling in patients with long arterial transit delays: Comparison with xenon CT CBF

Deqiang Qiu, Matus Straka, Zungho Zun, Roland Bammer, Michael E Moseley, Greg Zaharchuk

Journal article  |  2012  |  Journal of Magnetic Resonance Imaging

Combined spin- and gradient-echo perfusion-weighted imaging

Heiko Schmiedeskamp, Matus Straka, Rexford D Newbould, Greg Zaharchuk, Jalal B Andre, Jean-Marc Olivot, Michael E Moseley, Gregory W Albers, Roland Bammer

Journal article  |  2012  |  Magnetic Resonance in Medicine

Automated Perfusion Imaging for the Evaluation of Transient Ischemic Attack

Jonathan T Kleinman, Greg Zaharchuk, Michael Mlynash, Alyshia A Ogdie, Matus Straka, Maarten G Lansberg, Neil E Schwartz, Stephanie Kemp, Roland Bammer, Gregory W Albers, Jean-Marc Olivot

Journal article  |  2012  |  Stroke

Hybrid prospective and retrospective head motion correction to mitigate cross-calibration errors

Murat Aksoy, Christoph Forman, Matus Straka, Tolga Cukur, Joachim Hornegger, Roland Bammer

Journal article  |  2012  |  Magnetic Resonance in Medicine

Infarct Growth with and without Intravenous Thrombolysis in Acute Ischemic Stroke Reply

Deidre A De Silva, Leonid Churilov, Jean-Marc Olivot, Soren Christensen, Maarten G Lansberg, Michael Mlynash, Bruce CV Campbell, Patricia Desmond, Matus Straka, Roland Bammer, Gregory W Albers, Stephen M Davis, Geoffrey A Donnan

Journal article  |  2012  |  Annals of Neurology

Compensation of slice profile mismatch in combined spin- and gradient-echo echo-planar imaging pulse sequences

Heiko Schmiedeskamp, Matus Straka, Roland Bammer

Journal article  |  2012  |  Magnetic Resonance in Medicine

Arterial Spin Labeling Imaging Findings in Transient Ischemic Attack Patients: Comparison with Diffusion- and Bolus Perfusion-Weighted Imaging

Greg Zaharchuk, Jean-Marc Olivot, Nancy J Fischbein, Roland Bammer, Matus Straka, Jonathan T Kleinman, Gregory W Albers

Journal article  |  2012  |  Cerebrovascular Diseases

Optical motion tracking to improve image quality in MRI of the brain

Julian Maclaren, Murat Aksoy, Melvyn Ooi, Roland Bammer

Conference Proceedings  |  2012  |  Image Reconstruction from Incomplete Data VII

The infarct core is well represented by the acute diffusion lesion: sustained reversal is infrequent

Bruce CV Campbell, Archana Purushotham, Soren Christensen, Patricia M Desmond, Yoshinari Nagakane, Mark W Parsons, Maarten G Lansberg, Michael Mlynash, Matus Straka, Deidre A De Silva, Jean-Marc Olivot, Roland Bammer, Gregory W Albers, Geoffrey A Donnan, Stephen M Davis

Journal article  |  2012  |  Journal of Cerebral Blood Flow and Metabolism

Atrophy and dysfunction of parahippocampal white matter in mild Alzheimer's disease

Changsheng Wang, Glenn T Stebbins, David A Medina, Raj C Shah, Roland Bammer, Michael E Moseley, Leyla deToledo-Morrell

Journal article  |  2012  |  Neurobiology of Aging

Self-encoded marker for optical prospective head motion correction in MRI

Christoph Forman, Murat Aksoy, Joachim Hornegger, Roland Bammer

Journal article  |  2011  |  Medical Image Analysis

Greater Effect of Stroke Thrombolysis in the Presence of Arterial Obstruction

Deidre A De Silva, Leonid Churilov, Jean-Marc Olivot, Soren Christensen, Maarten G Lansberg, Michael Mlynash, Bruce CV Campbell, Patricia Desmond, Matus Straka, Roland Bammer, Gregory W Albers, Stephen M Davis, Geoffrey A Donnan

Journal article  |  2011  |  Annals of Neurology

Cerebral CT Perfusion Using an Interventional C-Arm Imaging System: Cerebral Blood Flow Measurements

A Ganguly, A Fieselmann, M Marks, J Rosenberg, J Boese, Y Deuerling-Zheng, M Straka, G Zaharchuk, R Bammer, R Fahrig

Journal article  |  2011  |  American Journal of Neuroradiology

Clinical Application of Readout-Segmented-Echo-Planar Imaging for Diffusion-Weighted Imaging in Pediatric Brain

SJ Holdsworth, K Yeom, S Skare, AJ Gentles, PD Barnes, R Bammer

Journal article  |  2011  |  American Journal of Neuroradiology

An Adaptive MR-Compatible Lens and Objective

J Maclaren, F Schneider, M Herbst, J Hennig, R Bammer, M Zaitsev, U Wallrabe

Journal article  |  2011  |  Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering

Real-Time Optical Motion Correction for Diffusion Tensor Imaging

Murat Aksoy, Christoph Forman, Matus Straka, Stefan Skare, Samantha Holdsworth, Joachim Hornegger, Roland Bammer

Journal article  |  2011  |  Magnetic Resonance in Medicine

RAPID Automated Patient Selection for Reperfusion Therapy A Pooled Analysis of the Echoplanar Imaging Thrombolytic Evaluation Trial (EPITHET) and the Diffusion and Perfusion Imaging Evaluation for Understanding Stroke Evolution (DEFUSE) Study

Maarten G Lansberg, Jun Lee, Soren Christensen, Matus Straka, Deidre A De Silva, Michael Mlynash, Bruce C Campbell, Roland Bammer, Jean-Marc Olivot, Patricia Desmond, Stephen M Davis, Geoffrey A Donnan, Gregory W Albers

Journal article  |  2011  |  Stroke

Refining the Definition of the Malignant Profile Insights From the DEFUSE-EPITHET Pooled Data Set

Michael Mlynash, Maarten G Lansberg, Deidre A De Silva, Jun Lee, Soren Christensen, Matus Straka, Bruce CV Campbell, Roland Bammer, Jean-Marc Olivot, Patricia Desmond, Geoffrey A Donnan, Stephen M Davis, Gregory W Albers

Journal article  |  2011  |  Stroke

Electrophysiological and diffusion tensor imaging evidence of delayed corollary discharges in patients with schizophrenia

TJ Whitford, DH Mathalon, ME Shenton, BJ Roach, R Bammer, RA Adcock, S Bouix, M Kubicki, J De Siebenthal, AC Rausch, JS Schneiderman, JM Ford

Journal article  |  2011  |  Psychological Medicine

The Acute Diffusion Lesion Reliably Represents Infarct Core: Clinically Relevant Reversibility Is Rare

Bruce C Campbell, Archana Purushotham, Soren Christensen, Patricia M Desmond, Yoshinari Nagakane, Mark W Parsons, Maarten G Lansberg, Michael Mlynash, Matus Straka, Deidre A De Silva, Jean-Marc Olivot, Roland Bammer, Gregory W Albers, Geoffrey A Donnan, Stephen M Davis

Conference Proceedings  |  2011  |  STROKE

The Combination Of Reperfusion And Recanalization Predicts Favorable Outcome Better Than Reperfusion Or Recanalization Alone In Target Mismatch Patients

Jun Lee, Maarten G Lansberg, Michael Mlynash, Deidre A De Silva, Soren Christensen, Matus Straka, Bruce C Campbell, Roland Bammer, Jean-Marc Olivot, Patricia Desmond, Geoffrey A Donnan, Stephen M Davis, Gregory W Albers

Conference Proceedings  |  2011  |  STROKE

Worse Stroke Outcome In Atrial Fibrillation Links To More Severe Hypoperfusion

Hans T Tu, Bruce C Campbell, Soren Christensen, Deidre A De Silva, Mark W Parsons, Leonid Churilov, Jean-Marc Olivot, Maarten G Lansberg, Michael Mlynash, Matus Straka, Roland Bammer, Gregory W Albers, Patricia M Desmond, Geoffrey A Donnan, Stephen M Davis

Conference Proceedings  |  2011  |  STROKE

Fluid-Attenuated Inversion Recovery Hyperintensity in Acute Ischemic Stroke May Not Predict Hemorrhagic Transformation

Bruce CV Campbell, Craig Costello, Soren Christensen, Martin Ebinger, Mark W Parsons, Patricia M Desmond, P Alan Barber, Kenneth S Butcher, Christopher R Levi, Deidre A De Silva, Maarten G Lansberg, Michael Mlynash, Jean-Marc Olivot, Matus Straka, Roland Bammer, Gregory W Albers, Geoffrey A Donnan, Stephen M Davis

Journal article  |  2011  |  Cerebrovascular Diseases

An adaptive objective for optical motion correction in MRI

F Schneider, J Draheim, T Burger, J Maclaren, M Herbst, M Zaitsev, R Bammer, U Wallrabe

Conference Proceedings  |  2010  |  2010 International Conference on Optical MEMS and Nanophotonics

Challenges of High-resolution Diffusion Imaging of the Human Medial Temporal Lobe in Alzheimer Disease.

Michael M Zeineh, Samantha Holdsworth, Stefan Skare, Scott W Atlas, Roland Bammer

Journal article  |  2010  |  Topics in Magnetic Resonance Imaging

The human medial temporal lobe performs an essential role in memory formation and retrieval. Diseases involving the hippocampus su..

Advanced diffusion-weighted magnetic resonance imaging techniques of the human spinal cord.

Jalal B Andre, Roland Bammer

Journal article  |  2010  |  Topics in Magnetic Resonance Imaging

Unlike those of the brain, advances in diffusion-weighted imaging (DWI) of the human spinal cord have been challenged by the more ..

Mild traumatic brain injury: is diffusion imaging ready for primetime in forensic medicine?

Elan J Grossman, Matilde Inglese, Roland Bammer

Journal article  |  2010  |  Topics in Magnetic Resonance Imaging

Mild traumatic brain injury (MTBI) is difficult to accurately assess with conventional imaging because such approaches usually fai..

An introduction to model-independent diffusion magnetic resonance imaging.

Anh T Van, Cristina Granziera, Roland Bammer

Journal article  |  2010  |  Topics in Magnetic Resonance Imaging

q-Space-based techniques such as diffusion spectrum imaging, q-ball imaging, and their variations have been used extensively in re..

Self-encoded marker for optical prospective head motion correction in MRI

C Forman, M Aksoy, J Hornegger, R Bammer

Conference Proceedings  |  2010  |  Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

COMT genotype affects prefrontal white matter pathways in children and adolescents.

Moriah E Thomason, Robert F Dougherty, Natalie L Colich, Lee M Perry, Elena I Rykhlevskaia, Hugo M Louro, Joachim F Hallmayer, Christian E Waugh, Roland Bammer, Gary H Glover, Ian H Gotlib

Journal article  |  2010  |  NeuroImage

Diffusion tensor imaging is widely used to evaluate the development of white matter. Information about how alterations in major ne..

MRI profile of the perihematomal region in acute intracerebral hemorrhage.

Jean-Marc Olivot, Michael Mlynash, Jonathan T Kleinman, Matus Straka, Chitra Venkatasubramanian, Roland Bammer, Michael E Moseley, Gregory W Albers, Christine AC Wijman, undefined DASH investigators

Journal article  |  2010  |  Stroke

BACKGROUND AND PURPOSE: The pathophysiology of the presumed perihematomal edema immediately surrounding an acute intracerebral hem..

Three-dimensional T(1), T(2) and proton density mapping with inversion recovery balanced SSFP.

Rexford D Newbould, Stefan T Skare, Marcus T Alley, Garry E Gold, Roland Bammer

Journal article  |  2010  |  Magnetic Resonance Imaging

By combining a balanced steady-state free precession (bSSFP) readout with an initial inversion pulse, all three contrast parameter..

Real-time diffusion-perfusion mismatch analysis in acute stroke.

Matus Straka, Gregory W Albers, Roland Bammer

Journal article  |  2010  |  Journal of Magnetic Resonance Imaging

Diffusion-perfusion mismatch can be used to identify acute stroke patients that could benefit from reperfusion therapies. Early as..

In vivo hemodynamic analysis of intracranial aneurysms obtained by magnetic resonance fluid dynamics (MRFD) based on time-resolved three-dimensional phase-contrast MRI.

Haruo Isoda, Yasuhide Ohkura, Takashi Kosugi, Masaya Hirano, Hiroyasu Takeda, Hisaya Hiramatsu, Shuhei Yamashita, Yasuo Takehara, Marcus T Alley, Roland Bammer, Norbert J Pelc, Hiroki Namba, Harumi Sakahara

Journal article  |  2010  |  Neuroradiology

INTRODUCTION: Hemodynamics is thought to play a very important role in the initiation, growth, and rupture of intracranial aneurys..

Predicting white matter targets for direct neurostimulation therapy.

Marvin A Rossi, Glenn Stebbins, Christopher Murphy, David Greene, Spencer Brinker, David Sarcu, Aaron Tenharmsel, Travis Stoub, Michael A Stein, Thomas J Hoeppner, Richard W Byrne, Michael E Moseley, Roland A Bammer, Steve Bild, Jennifer Dennis, Nichole Arnett, Antoaneta Balabanov, Donna Bergen, Andres M Kanner, Michael C Smith

Journal article  |  2010  |  Epilepsy Research

A novel depth electrode placement planning strategy is presented for propagating current to distant epileptic tissue during direct..

Comparison of hemodynamics of intracranial aneurysms between MR fluid dynamics using 3D cine phase-contrast MRI and MR-based computational fluid dynamics.

Haruo Isoda, Yasuhide Ohkura, Takashi Kosugi, Masaya Hirano, Marcus T Alley, Roland Bammer, Norbert J Pelc, Hiroki Namba, Harumi Sakahara

Journal article  |  2010  |  Neuroradiology

INTRODUCTION: Hemodynamics is thought to play a very important role in the initiation, growth, and rupture of intracranial aneurys..

Temporal and spatial profile of brain diffusion-weighted MRI after cardiac arrest.

Michael Mlynash, Dennis M Campbell, Emily M Leproust, Nancy J Fischbein, Roland Bammer, Irina Eyngorn, Amie W Hsia, Michael Moseley, Christine AC Wijman

Journal article  |  2010  |  Stroke

BACKGROUND AND PURPOSE: Diffusion-weighted magnetic resonance imaging of the brain is a promising technique to help predict functi..

Effects of motion and b-matrix correction for high resolution DTI with short-axis PROPELLER-EPI.

Murat Aksoy, Stefan Skare, Samantha Holdsworth, Roland Bammer

Journal article  |  2010  |  NMR in Biomedicine

Short-axis PROPELLER-EPI (SAP-EPI) has been proven to be very effective in providing high-resolution diffusion-weighted and diffus..

Combined arterial spin label and dynamic susceptibility contrast measurement of cerebral blood flow.

Greg Zaharchuk, Matus Straka, Michael P Marks, Gregory W Albers, Michael E Moseley, Roland Bammer

Journal article  |  2010  |  Magnetic Resonance in Medicine

Dynamic susceptibility contrast (DSC) and arterial spin labeling (ASL) are both used to measure cerebral blood flow (CBF), but nei..

Improvements in parallel imaging accelerated functional MRI using multiecho echo-planar imaging.

Heiko Schmiedeskamp, Rexford D Newbould, Laura J Pisani, Stefan Skare, Gary H Glover, Klaas P Pruessmann, Roland Bammer

Journal article  |  2010  |  Magnetic Resonance in Medicine

Multiecho echo-planar imaging (EPI) was implemented for blood-oxygenation-level-dependent functional MRI at 1.5 T and compared to ..

Breathheld autocalibrated phase-contrast imaging.

Calvin Lew, Marcus T Alley, Daniel M Spielman, Roland Bammer, Frandics P Chan

Journal article  |  2010  |  Journal of Magnetic Resonance Imaging

PURPOSE: To compare generalized autocalibrating partially parallel acquisitions (GRAPPA), modified sensitivity encoding (mSENSE), ..

Self-encoded marker for optical prospective head motion correction in MRI.

Christoph Forman, Murat Aksoy, Joachim Hornegger, Roland Bammer

Journal article  |  2010  |  Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

The tracking and compensation of patient motion during a magnetic resonance imaging (MRI) acqusition is an unsolved problem. For b..

Robust GRAPPA-accelerated diffusion-weighted readout-segmented (RS)-EPI.

Samantha J Holdsworth, Stefan Skare, Rexford D Newbould, Roland Bammer

Journal article  |  2009  |  Magnetic Resonance in Medicine

Readout segmentation (RS-EPI) has been suggested as a promising variant to echo-planar imaging (EPI) for high-resolution imaging, ..

Improving dynamic susceptibility contrast MRI measurement of quantitative cerebral blood flow using corrections for partial volume and nonlinear contrast relaxivity: A xenon computed tomographic comparative study.

Greg Zaharchuk, Roland Bammer, Matus Straka, Rexford D Newbould, Jarrett Rosenberg, Jean-Marc Olivot, Michael Mlynash, Maarten G Lansberg, Neil E Schwartz, Michael M Marks, Gregory W Albers, Michael E Moseley

Journal article  |  2009  |  Journal of Magnetic Resonance Imaging

PURPOSE: To test whether dynamic susceptibility contrast MRI-based CBF measurements are improved with arterial input function (AIF..

Performance of PROPELLER relative to standard FSE T2-weighted imaging in pediatric brain MRI.

A Talia Vertinsky, Erika Rubesova, Michael V Krasnokutsky, Sabine Bammer, Jarrett Rosenberg, Allan White, Patrick D Barnes, Roland Bammer

Journal article  |  2009  |  Pediatric Radiology

BACKGROUND: T2-weighted fast spin-echo imaging (T2-W FSE) is frequently degraded by motion in pediatric patients. MR imaging with ..

Geography, Structure, and Evolution of Diffusion and Perfusion Lesions in Diffusion and Perfusion Imaging Evaluation For Understanding Stroke Evolution (DEFUSE)

Jean-Marc Olivot, Michael Mlynash, Vincent N Thijs, Archana Purushotham, Stephanie Kemp, Maarten G Lansberg, Lawrence Wechsler, Garry E Gold, Roland Bammer, Michael P Marks, Gregory W Albers

Journal article  |  2009  |  Stroke

Arterial spin-label imaging in patients with normal bolus perfusion-weighted MR imaging findings: pilot identification of the borderzone sign.

Greg Zaharchuk, Roland Bammer, Matus Straka, Ajit Shankaranarayan, David C Alsop, Nancy J Fischbein, Scott W Atlas, Michael E Moseley

Journal article  |  2009  |  Radiology

PURPOSE: To determine whether perfusion abnormalities are depicted on arterial spin-labeling (ASL) images obtained in patients wit..

Hemodynamics in normal cerebral arteries: qualitative comparison of 4D phase-contrast magnetic resonance and image-based computational fluid dynamics

Juan R Cebral, Christopher M Putman, Marcus T Alley, Thomas Hope, Roland Bammer, Fernando Calamante

Journal article  |  2009  |  Journal of Engineering Mathematics

Using diffusion tensor imaging and fiber tracking to characterize diffuse perinatal white matter injury: a case report.

Jason D Yeatman, Michal Ben-Shachar, Roland Bammer, Heidi M Feldman

Journal article  |  2009  |  Journal of Child Neurology

Prematurity is associated with white matter injury. Diffusion tensor imaging, a new magnetic resonance imaging technique, identifi..

Computational fluid dynamics and phase-contrast magnetic resonance of normal cerebral arteries

J Cebral, F Mut, C Putman, M Alley, R Bammer, F Calamante

Conference Proceedings  |  2009  |  Medical Imaging 2009: Biomedical Applications in Molecular, Structural, and Functional Imaging

Relationships Between Cerebral Perfusion and Reversibility of Acute Diffusion Lesions in DEFUSE Insights from RADAR

Jean-Marc Olivot, Michael Mlynash, Vincent N Thijs, Archana Purushotham, Stephanie Kemp, Maarten G Lansberg, Lawrence Wechsler, Roland Bammer, Michael P Marks, Gregory W Albers

Journal article  |  2009  |  Stroke

New methods in diffusion-weighted and diffusion tensor imaging.

Roland Bammer, Samantha J Holdsworth, Wouter B Veldhuis, Stefan T Skare

Journal article  |  2009  |  Magnetic Resonance Imaging Clinics of North America

Considerable strides have been made by countless individual researchers in diffusion-weighted imaging (DWI) to push DWI from an ex..

Parallel imaging artifacts in body magnetic resonance imaging.

Patricia Noël, Roland Bammer, Caroline Reinhold, Masoom A Haider

Journal article  |  2009  |  Canadian Association of Radiologists Journal

OBJECTIVE: To familiarize the reader with the fundamental concepts of partial parallel imaging (PPI); to review the technical aspe..

Prognostic value of brain diffusion-weighted imaging after cardiac arrest.

Christine AC Wijman, Michael Mlynash, Anna Finley Caulfield, Amie W Hsia, Irina Eyngorn, Roland Bammer, Nancy Fischbein, Gregory W Albers, Michael Moseley

Journal article  |  2009  |  Annals of Neurology

OBJECTIVE: Outcome prediction is challenging in comatose postcardiac arrest survivors. We assessed the feasibility and prognostic ..

Perfusion MRI (Tmax and MTT) correlation with xenon CT cerebral blood flow in stroke patients.

J-M Olivot, M Mlynash, G Zaharchuk, M Straka, R Bammer, N Schwartz, MG Lansberg, ME Moseley, GW Albers

Journal article  |  2009  |  Neurology

BACKGROUND: While stable xenon CT (Xe-CT) cerebral blood flow (CBF) is an accepted standard for quantitative assessment of cerebra..

Optimal Tmax Threshold for Predicting Penumbral Tissue in Acute Stroke

Jean-Marc Olivot, Michael Mlynash, Vincent N Thijs, Stephanie Kemp, Maarten G Lansberg, Lawrence Wechsler, Roland Bammer, Michael P Marks, Gregory W Albers

Journal article  |  2009  |  Stroke

The MRA-DWI mismatch identifies patients with stroke: Who are likely to benefit from reperfusion

MG Lansberg, VN Thijs, R Bammer, JM Olivot, MP Marks, LR Wechsler, S Kemp, GW Albers

Journal article  |  2009  |  Revista Neurologica Argentina

Prefrontal plasticity and stress inoculation-induced resilience.

Maor Katz, Chunlei Liu, Marie Schaer, Karen J Parker, Marie-Christine Ottet, Averi Epps, Christine L Buckmaster, Roland Bammer, Michael E Moseley, Alan F Schatzberg, Stephan Eliez, David M Lyons

Journal article  |  2009  |  Developmental Neuroscience

Coping with mild early life stress tends to make subsequent coping efforts more effective and therefore more likely to be used as ..

Changes in parahippocampal white matter integrity in amnestic mild cognitive impairment: a diffusion tensor imaging study.

EJ Rogalski, CM Murphy, L deToledo-Morrell, RC Shah, ME Moseley, R Bammer, GT Stebbins

Journal article  |  2009  |  Behavioural Neurology

In the present study, changes in the parahippocampal white matter (PWM), in the region that includes the perforant path, were inve..

An auto-calibrated, angularly continuous, two-dimensional GRAPPA kernel for propeller trajectories.

Stefan Skare, Rexford D Newbould, Anders Nordell, Samantha J Holdsworth, Roland Bammer

Journal article  |  2008  |  Magnetic Resonance in Medicine

The k-space readout of propeller-type sequences may be accelerated by the use of parallel imaging (PI). For PROPELLER, the main be..

Patients with Acute Stroke Treated with Intravenous tPA 3-6 Hours after Stroke Onset: Correlations between MR Angiography Findings and Perfusion- and Diffusion-weighted Imaging in the DEFUSE Study

Michael P Marks, Jean-Marc Olivot, Stephanie Kemp, Maarten G Lansberg, Roland Bammer, Lawrence R Wechsler, Gregory W Albers, Vincent Thijs

Journal article  |  2008  |  Radiology

Magnetic resonance imaging techniques: fMRI, DWI, and PWI.

Samantha J Holdsworth, Roland Bammer

Journal article  |  2008  |  Seminars in Neurology

Magnetic resonance imaging (MRI) is a noninvasive technique which can acquire important quantitative and anatomical information fr..

Gender effects on HIV-associated white matter alterations: A voxel-wise DTI Study

CA Smith, GT Stebbins, RE Bartt, HA Kessler, OM Adeyemi, E Martin, R Bammer, ME Moseley

Journal article  |  2008  |  Brain Imaging and Behavior

The MRA-DWI mismatch identifies patients with stroke who are likely to benefit from reperfusion

Maarten G Lansberg, Vincent N Thijs, Roland Bammer, Jean-Marc Olivot, Michael P Marks, Lawrence R Wechsler, Stephanie Kemp, Gregory W Albers

Journal article  |  2008  |  Stroke

Cognitive processing speed and the structure of white matter pathways: convergent evidence from normal variation and lesion studies.

Andu Turken, Susan Whitfield-Gabrieli, Roland Bammer, Juliana V Baldo, Nina F Dronkers, John DE Gabrieli

Journal article  |  2008  |  NeuroImage

We investigated the relation between cognitive processing speed and structural properties of white matter pathways via convergent ..

Relationships between infarct growth, clinical outcome, and early recanalization in Diffusion and perfusion imaging For Understanding Stroke Evolution (DEFUSE)

Jean-Marc Olivot, Michael Mlynash, Vincent N Thijs, Stephanie Kemp, Maarten G Lansberg, Lawrence Wechsler, Gottfried Schlaug, Roland Bammer, Michael P Marks, Gregory W Albers

Journal article  |  2008  |  Stroke

Optimal definition for PWI/DWI mismatch in acute ischemic stroke patients (vol 28, pg 887, 2008)

Wataru Kakuda, Maarten G Lansberg, Vincent N Thijs, Stephanie M Kemp, Roland Bammer, Lawrence R Wechsler, Michael E Moseley, Michael P Marks, Gregory W Albers

Journal article  |  2008  |  Journal of Cerebral Blood Flow & Metabolism

Optimal definition for PWI/DWI mismatch in acute ischemic stroke patients

Wataru Kakuda, Maarten G Lansberg, Vincent N Thijs, Stephanie M Kemp, Roland Bammer, Lawrence R Wechsler, Michael E Moseley, Michael P Parks, Gregory W Albers

Journal article  |  2008  |  Journal of Cerebral Blood Flow & Metabolism

Single-step nonlinear diffusion tensor estimation in the presence of microscopic and macroscopic motion.

Murat Aksoy, Chunlei Liu, Michael E Moseley, Roland Bammer

Journal article  |  2008  |  Magnetic Resonance in Medicine

Patient motion can cause serious artifacts in diffusion tensor imaging (DTI), diminishing the reliability of the estimated diffusi..

Acute stroke imaging research roadmap.

Max Wintermark, Gregory W Albers, Andrei V Alexandrov, Jeffry R Alger, Roland Bammer, Jean-Claude Baron, Stephen Davis, Bart M Demaerschalk, Colin P Derdeyn, Geoffrey A Donnan, James D Eastwood, Jochen B Fiebach, Marc Fisher, Karen L Furie, Gregory V Goldmakher, Werner Hacke, Chelsea S Kidwell, Stephan P Kloska, Martin Köhrmann, Walter Koroshetz, et al.

Journal article  |  2008  |  American Journal of Neuroradiology

The recent "Advanced Neuroimaging for Acute Stroke Treatment" meeting on September 7 and 8, 2007 in Washington DC, brought togethe..

Acute stroke imaging research roadmap

Max Wintermark, Gregory W Albers, Andrei V Alexandrov, Jeffry R Alger, Roland Bammer, Jean-Claude Baron, Stephen Davis, Bart M Demaerschalk, Colin P Derdeyn, Geoffrey A Donnan, James D Eastwood, Jochen B Fiebach, Marc Fisher, Karen L Furie, Gregory V Goldmakher, Werner Hacke, Chelsea S Kidwell, Stephan P Kloska, Martin Koehrmann, Walter Koroshetz, et al.

Journal article  |  2008  |  Stroke

Fast parallel spiral chemical shift imaging at 3T using iterative SENSE reconstruction.

Dirk Mayer, Dong-Hyun Kim, Daniel M Spielman, Roland Bammer

Journal article  |  2008  |  Magnetic Resonance in Medicine

Spiral chemical shift imaging (CSI) is a fast CSI technique that simultaneously encodes 1D spectral and 2D spatial information. Th..

Diffusion-weighted MR imaging of the normal fetal lung.

Csilla Balassy, Gregor Kasprian, Peter C Brugger, Bence Csapo, Michael Weber, Marcus Hörmann, Alexander Bankier, Roland Bammer, Christian J Herold, Daniela Prayer

Journal article  |  2008  |  European Radiology

To quantify apparent diffusion coefficient (ADC) changes in fetuses with normal lungs and to determine whether ADC can be used in ..

Comparison of reconstruction accuracy and efficiency among autocalibrating data-driven parallel imaging methods.

Anja CS Brau, Philip J Beatty, Stefan Skare, Roland Bammer

Journal article  |  2008  |  Magnetic Resonance in Medicine

The class of autocalibrating "data-driven" parallel imaging (PI) methods has gained attention in recent years due to its ability t..

WE‐D‐342‐02: Parallel Acquisition Methods for Neuroimaging

R Bammer

Conference Proceedings  |  2008  |  Medical Physics

Readout-segmented EPI for rapid high resolution diffusion imaging at 3 T.

Samantha J Holdsworth, Stefan Skare, Rexford D Newbould, Raphael Guzmann, Nikolas H Blevins, Roland Bammer

Journal article  |  2008  |  European Journal of Radiology

Readout mosaic segmentation has been suggested as an alternative approach to EPI for high resolution diffusion-weighted imaging (D..

White matter anisotropy and depression symptoms in patients with HIV.

Clifford A Smith, Glenn T Stebbins, Russell E Bartt, Harold A Kessler, Oluwatoyin M Adeyemi, Eileen Martin, Roland Bammer, Michael E Moseley

Journal article  |  2008  |  The Journal of Neuropsychiatry and Clinical Neurosciences

HIV is associated with increased risk for depression. Normal appearing white matter (NAWM) fractional anisotropy in 15 HIV-seropos..

HIV-associated alterations in normal-appearing white matter: a voxel-wise diffusion tensor imaging study.

Glenn T Stebbins, Clifford A Smith, Russell E Bartt, Harold A Kessler, Oluwatoyin M Adeyemi, Eileen Martin, Jennifer L Cox, Roland Bammer, Michael E Moseley

Journal article  |  2007  |  JAIDS Journal of Acquired Immune Deficiency Syndromes

OBJECTIVE: There are conflicting reports of adverse HIV-associated alterations in white matter integrity as measured by diffusion ..

Parallel imaging reconstruction for arbitrary trajectories using k-space sparse matrices (kSPA).

Chunlei Liu, Roland Bammer, Michael E Moseley

Journal article  |  2007  |  Magnetic Resonance in Medicine

Although the concept of receiving MR signal using multiple coils simultaneously has been known for over two decades, the technique..

Diffusion-weighted MR imaging (DWI) in the evaluation of epidural spinal lesions.

Christina Plank, Anke Koller, Christina Mueller-Mang, Roland Bammer, Majda M Thurnher

Journal article  |  2007  |  Neuroradiology

INTRODUCTION: Epidural spinal cord compression is one of the most critical emergency conditions requiring medical attention and re..

SENSE phase-constrained magnitude reconstruction with iterative phase refinement.

Calvin Lew, Angel R Pineda, David Clayton, Dan Spielman, Frandics Chan, Roland Bammer

Journal article  |  2007  |  Magnetic Resonance in Medicine

Conventional sensitivity encoding (SENSE) reconstruction is based on equations in the complex domain. However, for many MRI applic..

Revision of the theory of tracer transport and the convolution model of dynamic contrast enhanced magnetic resonance imaging.

Stephen L Keeling, Roland Bammer, Rudolf Stollberger

Journal article  |  2007  |  Journal of Mathematical Biology

Counterexamples are used to motivate the revision of the established theory of tracer transport. Then dynamic contrast enhanced ma..

Risk factors of symptomatic intracerebral hemorrhage after tPA therapy for acute stroke

Maarten G Lansberg, Vincent N Thijs, Roland Bammer, Stephanie Kemp, Christine AC Wijman, Michael P Marks, Gregory W Albers

Journal article  |  2007  |  Stroke

Perfusion mapping with multiecho multishot parallel imaging EPI.

Rexford D Newbould, Stefan T Skare, Thies H Jochimsen, Marcus T Alley, Michael E Moseley, Gregory W Albers, Roland Bammer

Journal article  |  2007  |  Magnetic Resonance in Medicine

Echo-planar imaging (EPI) is the standard technique for dynamic susceptibility-contrast (DSC) perfusion MRI. However, EPI suffers ..

Identifying systematic errors in quantitative dynamic-susceptibility contrast perfusion imaging by high-resolution multi-echo parallel EPI.

Thies H Jochimsen, Rexford D Newbould, Stefan T Skare, David B Clayton, Gregory W Albers, Michael E Moseley, Roland Bammer

Journal article  |  2007  |  NMR in Biomedicine

Several obstacles usually confound a straightforward perfusion analysis using dynamic-susceptibility contrast-based magnetic reson..

Evaluation of the clinical-diffusion and perfusion-diffusion mismatch models in DEFUSE

Maarten G Lansberg, Vincent N Thijs, Scott Hamilton, Gottfried Schlaug, Roland Bammer, Stephanie Kemp, Gregory W Albers

Journal article  |  2007  |  Stroke

Clinical multishot DW-EPI through parallel imaging with considerations of susceptibility, motion, and noise.

Stefan Skare, Rexford D Newbould, David B Clayton, Gregory W Albers, Scott Nagle, Roland Bammer

Journal article  |  2007  |  Magnetic Resonance in Medicine

Geometric distortions and poor image resolution are well known shortcomings of single-shot echo-planar imaging (ss-EPI). Yet, due ..

Peak velocity and flow quantification validation for sensitivity-encoded phase-contrast MR imaging.

Calvin D Lew, Marcus T Alley, Roland Bammer, Daniel M Spielman, Frandics P Chan

Journal article  |  2007  |  Academic Radiology

RATIONALE AND OBJECTIVES: Phase-contrast (PC) magnetic resonance imaging (MRI) technique has important clinical applications in bl..

Diffusion MR imaging in multiple sclerosis: technical aspects and challenges.

E Pagani, R Bammer, MA Horsfield, M Rovaris, A Gass, O Ciccarelli, M Filippi

Journal article  |  2007  |  American Journal of Neuroradiology

SUMMARY: Diffusion tensor (DT) MR imaging has frequently been applied in multiple sclerosis (MS) because of its ability to detect ..

Modern Applications of MRI in Medical Sciences: New MRI Techniques for the Detection of Acute Cerebral Ischemia

ME Moseley, R Bammer, J Röther

Book Chapter  |  2007

Restricted field of view magnetic resonance imaging of a dynamic time series.

Laura Pisani, Roland Bammer, Gary Glover

Journal article  |  2007  |  Magnetic Resonance in Medicine

A restricted field of view (rFOV) approach for imaging a dynamic time series of volumes of limited spatial extent within a larger ..

Cutting-edge imaging of the spine.

A Talia Vertinsky, Michael V Krasnokutsky, Michael Augustin, Roland Bammer

Journal article  |  2007  |  Neuroimaging Clinics of North America

Damage to the spinal cord may be caused by a wide range of pathologies and generally results in profound functional disability. A ..

Balanced SSFP imaging of the musculoskeletal system.

Garry E Gold, Brian A Hargreaves, Scott B Reeder, Walter F Block, Richard Kijowski, Shreyas S Vasanawala, Peter R Kornaat, Roland Bammer, Rexford Newbould, Neal K Bangerter, Christopher F Beaulieu

Journal article  |  2007  |  Journal of Magnetic Resonance Imaging

Magnetic resonance imaging (MRI), with its unique ability to image and characterize soft tissue noninvasively, has emerged as one ..

Augmented generalized SENSE reconstruction to correct for rigid body motion.

Roland Bammer, Murat Aksoy, Chunlei Liu

Journal article  |  2007  |  Magnetic Resonance in Medicine

The correction of motion artifacts continues to be a significant problem in MRI. In the case of uncooperative patients, such as ch..

Time-resolved 3D quantitative flow MRI of the major intracranial vessels: initial experience and comparative evaluation at 1.5T and 3.0T in combination with parallel imaging.

Roland Bammer, Thomas A Hope, Murat Aksoy, Marcus T Alley

Journal article  |  2007  |  Magnetic Resonance in Medicine

Exact knowledge of blood flow characteristics in the major cerebral vessels is of great relevance for diagnosing cerebrovascular a..

Reduced relationship to cortical white matter volume revealed by tractography-based segmentation of the corpus callosum in young children with developmental delay.

Carissa Cascio, Martin Styner, Rachel G Smith, Michele D Poe, Guido Gerig, Heather C Hazlett, Matthieu Jomier, Roland Bammer, Joseph Piven

Journal article  |  2006  |  American Journal of Psychiatry

OBJECTIVE: The corpus callosum is the primary anatomical substrate for interhemispheric communication, which is important for a ra..

Diffusion-weighted MR imaging (DWI) in spinal cord ischemia.

Majda M Thurnher, Roland Bammer

Journal article  |  2006  |  Neuroradiology

INTRODUCTION: Spinal cord infarction is a rare clinical diagnosis characterized by a sudden onset of paralysis, bowel and bladder ..

Magnetic resonance imaging profiles predict clinical response to early reperfusion: The diffusion and perfusion imaging evaluation for understanding stroke evolution (DEFUSE) study

Gregory W Albers, Vincent N Thijs, Lawrence Wechsle, Stephanie Kemp, Gottfried Schlaug, Elaine Skalabrin, Roland Bammer, Wataru Kakuda, Maarten G Lansberg, Ashfaq Shuaib, William Coplin, Scott Hamilton, Michael Moseley, Michael P Marks

Journal article  |  2006  |  Annals of Neurology

Diffusion-weighted magnetic resonance imaging of the spine and spinal cord.

Majda M Thurnher, Roland Bammer

Journal article  |  2006  |  Seminars in Roentgenology

Propeller EPI in the other direction.

Stefan Skare, Rexford D Newbould, Dave B Clayton, Roland Bammer

Journal article  |  2006  |  Magnetic Resonance in Medicine

A new propeller EPI pulse sequence with reduced sensitivity to field inhomogeneities is proposed. Image artifacts such as blurring..

Efficient simulation of magnetic resonance imaging with Bloch-Torrey equations using intra-voxel magnetization gradients.

Thies H Jochimsen, Andreas Schäfer, Roland Bammer, Michael E Moseley

Journal article  |  2006  |  Journal of Magnetic Resonance

The process of image formation in magnetic resonance imaging (MRI) can be simulated by means of an iterative solution of Bloch-Tor..

Comparison of minimally invasive and conventional open posterolateral lumbar fusion using magnetic resonance imaging and retraction pressure studies.

Kathryn J Stevens, David B Spenciner, Karen L Griffiths, Kee D Kim, Marike Zwienenberg-Lee, Todd Alamin, Roland Bammer

Journal article  |  2006  |  Journal of Spinal Disorders & Techniques

OBJECTIVE: To determine whether minimally invasive lumbar spinal fusion results in less paraspinal muscle damage than conventional..

Simultaneous phase correction and SENSE reconstruction for navigated multi-shot DWI with non-cartesian k-space sampling.

Chunlei Liu, Michael E Moseley, Roland Bammer

Journal article  |  2005  |  Magnetic Resonance in Medicine

Phase-navigated multi-shot acquisition and parallel imaging are two techniques that have been applied to diffusion-weighted imagin..

A physical model for DT-MRI based connectivity map computation

E Yörük, B Acar, R Bammer

Conference Proceedings  |  2005  |  Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Arithmetic ability and parietal alterations: a diffusion tensor imaging study in velocardiofacial syndrome.

Naama Barnea-Goraly, Stephan Eliez, Vinod Menon, Roland Bammer, Allan L Reiss

Journal article  |  2005  |  Cognitive Brain Research

Velocardiofacial syndrome (VCFS) is a congenital anomaly that causes somatic as well as cognitive and psychiatric impairments. Pre..

Occipital-callosal pathways in children: Validation and atlas development.

Robert F Dougherty, Michal Ben-Shachar, Gayle Deutsch, Polina Potanina, Roland Bammer, Brian A Wandell

Conference Proceedings  |  2005  |  Annals of the New York Academy of Sciences

Diffusion tensor imaging and fiber tracking were used to measure fiber bundles connecting the two occipital lobes in 53 children o..

White matter development during childhood and adolescence: a cross-sectional diffusion tensor imaging study.

Naama Barnea-Goraly, Vinod Menon, Mark Eckert, Leanne Tamm, Roland Bammer, Asya Karchemskiy, Christopher C Dant, Allan L Reiss

Journal article  |  2005  |  Cerebral Cortex

Maturation of brain white matter pathways is an important factor in cognitive, behavioral, emotional and motor development during ..

Diffusion MRI in multiple sclerosis.

M Rovaris, A Gass, R Bammer, SJ Hickman, O Ciccarelli, DH Miller, M Filippi

Journal article  |  2005  |  Neurology

Diffusion imaging is a quantitative, MR-based technique potentially useful for the study of multiple sclerosis (MS), due to its in..

Clinical importance of microbleeds in patients receiving IV thrombolysis

W Kakuda, VN Thijs, MG Lansberg, R Bammer, L Wechsler, S Kemp, ME Moseley, MP Marks, GW Albers

Journal article  |  2005  |  Neurology

Limitations of apparent diffusion coefficient-based models in characterizing non-gaussian diffusion.

Chunlei Liu, Roland Bammer, Michael E Moseley

Journal article  |  2005  |  Magnetic Resonance in Medicine

Diffusion in complex heterogeneous structures, for example, the neural fiber system, is non-gaussian. Recently, several methods ha..

Children's reading performance is correlated with white matter structure measured by diffusion tensor imaging.

Gayle K Deutsch, Robert F Dougherty, Roland Bammer, Wai Ting Siok, John DE Gabrieli, Brian Wandell

Journal article  |  2005  |  Cortex

We investigated the white matter structure in children (n = 14) with a wide range of reading performance levels using diffusion te..

Automated method for generating the arterial input function on perfusion-weighted MR imaging: validation in patients with stroke.

Michael Mlynash, Irina Eyngorn, Roland Bammer, Michael Moseley, David C Tong

Journal article  |  2005  |  American Journal of Neuroradiology

BACKGROUND AND PURPOSE: The choice of arterial input function (AIF) can have a profound effect on the blood flow maps generated on..

Functional organization of human occipital-callosal fiber tracts.

Robert F Dougherty, Michal Ben-Shachar, Roland Bammer, Alyssa A Brewer, Brian A Wandell

Journal article  |  2005  |  Proceedings of the National Academy of Sciences

Diffusion tensor imaging (DTI) and fiber tracking (FT) were used to measure the occipital lobe fiber tracts connecting the two hem..

Foundations of advanced magnetic resonance imaging.

Roland Bammer, Stefan Skare, Rexford Newbould, Chunlei Liu, Vincent Thijs, Stefan Ropele, David B Clayton, Gunnar Krueger, Michael E Moseley, Gary H Glover

Journal article  |  2005  |  NeuroRX

During the past decade, major breakthroughs in magnetic resonance imaging (MRI) quality were made by means of quantum leaps in sca..

A physical model for DT-MRI based connectivity map computation.

Erdem Yörük, Burak Acar, Roland Bammer

Journal article  |  2005  |  Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention

In this study we address the problem of extracting a robust connectivity metric for brain white matter. We defined the connectivit..

Self-navigated interleaved spiral (SNAILS): application to high-resolution diffusion tensor imaging.

Chunlei Liu, Roland Bammer, Dong-Hyun Kim, Michael E Moseley

Journal article  |  2004  |  Magnetic Resonance in Medicine

A fat-saturated twice-refocused spin echo sequence was implemented on a GE Signa 1.5-T whole-body system for diffusion-weighted im..

A variational approach to magnetic resonance coil sensitivity estimation

SL Keeling, R Bammer

Journal article  |  2004  |  Applied Mathematics and Computation

Parallel Imaging: (Part II).

Roland Bammer

Journal article  |  2004  |  Topics in Magnetic Resonance Imaging

Parallel Imaging: (Part I)

R Bammer

Journal article  |  2004  |  Topics in Magnetic Resonance Imaging

Fast patient workup in acute stroke using parallel imaging.

Michael Augustin, Franz Fazekas, Roland Bammer

Journal article  |  2004  |  Topics in Magnetic Resonance Imaging

Treatment of ischemic stroke is a very frustrating topic for neurologists. Presently, the most promising therapy seems to be throm..

A comparative evaluation of CH3-DTPA-Gd (NMS60) for contrast-enhanced magnetic resonance angiography.

R Bammer, AJ de Crespigny, D Howard, S Seri, Y Hashiguchi, A Nakatani, ME Moseley

Journal article  |  2004  |  Magnetic Resonance Imaging

In a canine model the signal dynamics of a new oligomer-based MR contrast agent (NMS60, 2158 Da) were compared to Gd-DTPA to inves..

Current concepts and advances in clinical parallel magnetic resonance imaging.

Roland Bammer, Stefan O Schoenberg

Journal article  |  2004  |  Topics in Magnetic Resonance Imaging

Parallel imaging (PI) is one of the most promising recent advances in MRI technology and has, similar to the introduction of multi..

Parallel imaging of the abdomen.

Daniel Jason Aaron Margolis, Roland Bammer, Lawrence C Chow

Journal article  |  2004  |  Topics in Magnetic Resonance Imaging

Parallel imaging holds great potential for improving the quality of diagnostic abdominal MRI. The increased imaging speed afforded..

Characterizing non-Gaussian diffusion by using generalized diffusion tensors.

Chunlei Liu, Roland Bammer, Burak Acar, Michael E Moseley

Journal article  |  2004  |  Magnetic Resonance in Medicine

Diffusion tensor imaging (DTI) is known to have a limited capability of resolving multiple fiber orientations within one voxel. Th..

Diffusion-weighted MRI of the spinal cord

M Thurnher, R Bammer

Conference Proceedings  |  2004  |  Rivista di Neuroradiologia

Influence of arterial input function on hypoperfusion volumes measured with perfusion-weighted imaging

VN Thijs, DM Somford, R Bammer, W Robberecht, ME Moseley, GW Albers

Journal article  |  2004  |  Stroke

Diffusion imaging of the human spinal cord and the vertebral column.

Roland Bammer, Franz Fazekas

Journal article  |  2003  |  Topics in Magnetic Resonance Imaging

During the last decade, diffusion-weighted imaging (DWI) has matured from an experimental tool to a clinically useful modality tha..

Generalized diffusion tensor imaging (GDTI): A method for characterizing and imaging diffusion anisotropy caused by non-Gaussian diffusion

C Liu, R Bammer, ME Moseley

Journal article  |  2003  |  Israel Journal of Chemistry

Generalized reconstruction of phase contrast MRI: analysis and correction of the effect of gradient field distortions.

M Markl, R Bammer, MT Alley, CJ Elkins, MT Draney, A Barnett, ME Moseley, GH Glover, NJ Pelc

Journal article  |  2003  |  Magnetic Resonance in Medicine

To characterize gradient field nonuniformity and its effect on velocity encoding in phase contrast (PC) MRI, a generalized model t..

Single breath-hold diffusion-weighted imaging of the abdomen.

Lawrence C Chow, Roland Bammer, Michael E Moseley, F Graham Sommer

Journal article  |  2003  |  Journal of Magnetic Resonance Imaging

PURPOSE: To generate high quality diffusion-weighted images (DWI) and corresponding isotropic ADC maps of the abdomen with full or..

Analysis and generalized correction of the effect of spatial gradient field distortions in diffusion-weighted imaging.

R Bammer, M Markl, A Barnett, B Acar, MT Alley, NJ Pelc, GH Glover, ME Moseley

Journal article  |  2003  |  Magnetic Resonance in Medicine

Nonuniformities of magnetic field gradients can cause serious artifacts in diffusion imaging. While it is well known that nonlinea..

Inter-sequence and inter-imaging unit variability of diffusion tensor MR imaging histogram-derived metrics of the brain in healthy volunteers.

Mara Cercignani, Roland Bammer, Maria P Sormani, Franz Fazekas, Massimo Filippi

Journal article  |  2003  |  American Journal of Neuroradiology

BACKGROUND AND PURPOSE: Diffusion tensor MR imaging has the potential to improve our ability to monitor several neurologic conditi..

Basic principles of diffusion-weighted imaging.

Roland Bammer

Journal article  |  2003  |  European Journal of Radiology

In diffusion-weighted MRI (DWI), image contrast is determined by the random microscopic motion of water protons. During the last y..

In vivo MR tractography using diffusion imaging.

Roland Bammer, Burak Acar, Michael E Moseley

Journal article  |  2003  |  European Journal of Radiology

Diffusion in structured tissue, such as white matter or muscle, is anisotropic. MR diffusion tensor imaging (DTI) measures anisotr..

Line scan diffusion imaging of the spine.

Roland Bammer, Andreas M Herneth, Stephan E Maier, Kim Butts, Rupert W Prokesch, Huy M Do, Scott W Atlas, Michael E Moseley

Journal article  |  2003  |  American Journal of Neuroradiology

BACKGROUND AND PURPOSE: Recent findings suggest that diffusion-weighted imaging might be an important adjunct to the diagnostic wo..

Automatische detektion der arteriellen inputfunktion in der dynamischen kontrastmittel verstärkten mr perfusions bildgebung

G Reishofer, R Bammer, P Kindl, R Stollberger

Journal article  |  2003  |  Biomedizinische Technik/Biomedical Engineering

Diffusion-tensor imaging of cognitive performance.

Michael Moseley, Roland Bammer, Judy Illes

Journal article  |  2002  |  Brain and Cognition

MR methods have for some years been used to assess cognitive performance. Recently, studies have shown that diffusion-tensor imagi..

Vertebral metastases: assessment with apparent diffusion coefficient.

Andreas M Herneth, Marcel O Philipp, Jonathan Naude, Martin Funovics, Reinhard R Beichel, Roland Bammer, Herwig Imhof

Journal article  |  2002  |  Radiology

The authors evaluated the apparent diffusion coefficient (ADC) in the assessment of vertebral metastases and acute vertebral compr..

Local staging of pancreatic carcinoma with multi-detector row CT: use of curved planar reformations initial experience.

Rupert W Prokesch, Lawrence C Chow, Christopher F Beaulieu, Matilde Nino-Murcia, Robert E Mindelzun, Roland Bammer, Jing Huang, R Brooke Jeffrey

Journal article  |  2002  |  Radiology

PURPOSE: To evaluate the utility of curved planar reformations compared with standard transverse images in the assessment of pancr..

Isoattenuating pancreatic adenocarcinoma at multi-detector row CT: secondary signs.

Rupert W Prokesch, Lawrence C Chow, Christopher F Beaulieu, Roland Bammer, R Brooke Jeffrey

Journal article  |  2002  |  Radiology

PURPOSE: To assess the frequency of isoattenuating pancreatic adenocarcinoma with multi-detector row computed tomography (CT) and ..

Diffusion tensor imaging using single-shot SENSE-EPI.

Roland Bammer, Martin Auer, Stephen L Keeling, Michael Augustin, Lara A Stables, Rupert W Prokesch, Rudolf Stollberger, Michael E Moseley, Franz Fazekas

Journal article  |  2002  |  Magnetic Resonance in Medicine

SENSitivity Encoding (SENSE) greatly enhances the quality of diffusion-weighted echo-planar imaging (EPI) by reducing blurring and..

Diffusion-weighted imaging of the spinal cord: interleaved echo-planar imaging is superior to fast spin-echo.

Roland Bammer, Michael Augustin, Rupert W Prokesch, Rudolf Stollberger, Franz Fazekas

Journal article  |  2002  |  Journal of Magnetic Resonance Imaging

PURPOSE: To compare and evaluate two novel diffusion-weighted sequences, based either on fast spin-echo (FSE) or interleaved echo-..

CT angiography of the subclavian artery: utility of curved planar reformations.

Rupert W Prokesch, Curtis H Coulam, Lawrence C Chow, Roland Bammer, Geoffrey D Rubin

Journal article  |  2002  |  Journal of Computer Assisted Tomography

Despite advances in the diagnosis and treatment of peripheral vascular occlusive disease, an ever-aging population continues to pr..

Diffusion imaging in multiple sclerosis.

Roland Bammer, Franz Fazekas

Journal article  |  2002  |  Neuroimaging Clinics of North America

Improved image reconstruction from sensitivity-encoded data by wavelet denoising and tikhonov regularization

ZP Liang, R Bammer, J Ji, NJ Pelc, GH Glover

Conference Proceedings  |  2002  |  Proceedings IEEE International Symposium on Biomedical Imaging

Detection of incipient fungal attack in wood using magnetic resonance parameter mapping

U Müller, R Bammer, A Teischinger

Journal article  |  2002  |  Holzforschung

Summary Magnetic resonance imaging delivers excellent, high-resolution spatial images of damp or wet wood that can sup..

Improved image reconstruction from sensitivity-encoded data by wavelet denoising and Tokhonov regularization

ZP Liang, R Bammer, J Ji, NJ Pelc, GH Glover

Conference Proceedings  |  2002  |  5th IEEE EMBS International Summer School on Biomedical Imaging, 2002.

T1 maps from shifted spin echoes and stimulated echoes.

S Ropele, R Bammer, R Stollberger, F Fazekas

Journal article  |  2001  |  Magnetic Resonance in Medicine

A new pulse sequence for fast multislice T1 mapping is presented. This method is based on calculating T1 from spin echo (SE) and s..

Improved diffusion-weighted single-shot echo-planar imaging (EPI) in stroke using sensitivity encoding (SENSE).

R Bammer, SL Keeling, M Augustin, KP Pruessmann, R Wolf, R Stollberger, HP Hartung, F Fazekas

Journal article  |  2001  |  Magnetic Resonance in Medicine

Diffusion-weighted single-shot EPI (sshEPI) is one of the most important tools for the diagnostic assessment of stroke patients, b..

Source localization of induced cortical oscillations during tactile finger stimulation.

G Schweitzer, G Edlinger, G Krausz, C Neuper, R Bammer, R Stollberger, G Pfurtscheller

Journal article  |  2001  |  Biomedizinische Technik/Biomedical Engineering

We investigated the EEG beta event-related synchronization (ERS) after tactile finger stimulation in three subjects. Prior studies..

Detection of fungal wood decay using Magnetic Resonance Imaging

U Müller, R Bammer, E Halmschlager, R Stollberger, R Wimmer

Journal article  |  2001  |  Holz als Roh- und Werkstoff

Diffusion-weighted imaging of patients with subacute cerebral ischemia: comparison with conventional and contrast-enhanced MR imaging.

M Augustin, R Bammer, J Simbrunner, R Stollberger, HP Hartung, F Fazekas

Journal article  |  2000  |  American Journal of Neuroradiology

BACKGROUND AND PURPOSE: The importance of diffusion-weighted imaging (DWI) for delineating acute ischemic lesions has been investi..

Magnetic resonance diffusion tensor imaging for characterizing diffuse and focal white matter abnormalities in multiple sclerosis.

R Bammer, M Augustin, S Strasser-Fuchs, T Seifert, P Kapeller, R Stollberger, F Ebner, HP Hartung, F Fazekas

Journal article  |  2000  |  Magnetic Resonance in Medicine

High-resolution diffusion tensor imaging (DTI) was performed in 14 patients with clinically definite multiple sclerosis (MS) and t..

Diffusion-weighted MR imaging of the spinal cord.

R Bammer, F Fazekas, M Augustin, J Simbrunner, S Strasser-Fuchs, T Seifert, R Stollberger, HP Hartung

Journal article  |  2000  |  American Journal of Neuroradiology

Diffusion-weighted MR imaging may increase the sensitivity and specificity of MR imaging for certain pathologic conditions of the ..

Parallel imaging strategies for high-speed Magnetic Resonance diffusion imaging

R Bammer, R Stollberger, M Augustin, T Seifert, S Strasser-Fuchs, P Wach, HP Hartung, F Fazekas

Journal article  |  2000  |  Proceedings of SPIE - The International Society for Optical Engineering

Novel imaging technologies in the assessment of cerebral ageing and vascular dementia.

F Fazeka, S Ropele, R Bammer, P Kapeller, R Stollberger, R Schmidt

Journal article  |  2000  |  Journal of Neural Transmission, Supplement

Introduction of magnetic resonance imaging (MRI) has opened new possibilities for detecting age-related brain tissue changes. The ..

High resolution diffusion tensor imaging using interleaved echo-planar imaging

R Bammer, M Augustin, T Seifert, S Strasser-Fuchs, R Stollberger, P Wach, HP Hartung, F Fazekas

Journal article  |  2000  |  Proceedings of SPIE - The International Society for Optical Engineering

Diffusion-weighted imaging with navigated interleaved echo-planar imaging and a conventional gradient system.

R Bammer, R Stollberger, M Augustin, J Simbrunner, H Offenbacher, H Kooijman, S Ropele, P Kapeller, P Wach, F Ebner, F Fazekas

Journal article  |  1999  |  Radiology

PURPOSE: To demonstrate the technical feasibility and precision of a navigated diffusion-weighted (DW) MR imaging method with inte..

Assessing the differences of reactive hyperemic flow due to the contribution of forearm composition using automated tissue segmentation from MR scans and venous occlusion strain gauge plethysmography

R Bammer, T Wascher, M Pedevilla, P Wach, F Ebner, R Stollberger

Conference Proceedings  |  1998  |  Medical Imaging 1998: Physiology and Function from Multidimensional Images

Assessment of dynamic Magnetic Resonance images using an independent workstation for determination, visualization and quantitative analysis of pharmacokinetic and physiological parameters

R Bammer, M Pedevilla, S Ropele, P Wach, F Ebner, R Stollberger

Conference Proceedings  |  1998  |  Medical Imaging 1998: Physiology and Function from Multidimensional Images

Forearm composition contributes to differences in reactive hyperaemia between healthy men and women.

TC Wascher, R Bammer, R Stollberger, B Bahadori, S Wallner, H Toplak

Journal article  |  1998  |  European Journal of Clinical Investigation

BACKGROUND: Post-ischaemic reactive hyperaemia in the forearm has been suggested as a marker of resistance vessel function. The co..

Hochaufgelöste diffusionsgewichtete MRT mit Multishot EPI und Phasennavigation bei zerebralen Ischämien

R Bammer, S Ropele, F Ebner, R Stollberger, M Augustin, F Fazekas, H Kooijman, P Wach

Journal article  |  1998  |  Biomedizinische Technik/Biomedical Engineering

Interleaved EPI: Eine Analyse der Bildartefakte und die Verwendbarkeit in der Neurologischen Diagnostik

F Ebner, R Stollberger, R Bammer, F Fazekas, P Wach

Journal article  |  1998  |  Biomedizinische Technik/Biomedical Engineering

Berechnung und Visualisierung multispektraler MR Parameter Bilder

R Bammer, R Stollberger, F Ebner, P Wach

Journal article  |  1996  |  Biomedizinische Technik/Biomedical Engineering