Leigh Johnston

Longitudinal hippocampal volumetric changes in mice following brain infarction

Vanessa H Brait, David K Wright, Mohsen Nategh, Alexander Oman, Warda T Syeda, Charlotte M Ermine, Katrina R O'Brien, Emilio Werden, Leonid Churilov, Leigh A Johnston, Lachlan H Thompson, Jess Nithianantharajah, Katherine A Jackman, Amy Brodtmann

Journal article  |  2021  |  SCIENTIFIC REPORTS

Hippocampal atrophy is increasingly described in many neurodegenerative syndromes in humans, including stroke and vascular cogniti..

A gyrification analysis approach based on Laplace Beltrami eigenfunction level sets

Rosita Shishegar, Fabrizio Pizzagalli, Nellie Georgiou-Karistianis, Gary F Egan, Neda Jahanshad, Leigh A Johnston

Journal article  |  2021  |  NeuroImage

An accurate measure of the complexity of patterns of cortical folding or gyrification is necessary for understanding normal brain ..

Correcting for Non-stationarity in BOLD-fMRI Connectivity Analyses

Catherine E Davey, David B Grayden, Leigh A Johnston

Journal article  |  2021  |  FRONTIERS IN NEUROSCIENCE

In this work fMRI BOLD datasets are shown to contain slice-dependent non-stationarities. A model containing slice-dependent, non-s..

QSMART: Quantitative Susceptibility Mapping Artifact Reduction Technique

Negin Yaghmaie, Warda Syeda, Chengchuan Wu, Yicheng Zhang, Tracy D Zhang, Emma L Burrows, Amy Brodtmann, Bradford A Moffat, David K Wright, Rebecca Glarin, Scott Kolbe, Leigh Johnston

Journal article  |  2021  |  NeuroImage

PURPOSE: Quantitative susceptibility mapping (QSM) is a novel MR technique that allows mapping of tissue susceptibility values fro..

Continuous monitoring of plant sodium transport dynamics using clinical PET

Gihan P Ruwanpathirana, Darren C Plett, Robert C Williams, Catherine E Davey, Leigh A Johnston, Herbert J Kronzucker

Journal article  |  2021  |  PLANT METHODS

BACKGROUND: The absorption, translocation, accumulation and excretion of substances are fundamental processes in all organisms inc..

White matter changes following experimental pediatric traumatic brain injury: an advanced diffusion-weighted imaging investigation

Akram Zamani, Terence J O'Brien, Jeff Kershaw, Leigh A Johnston, Bridgette D Semple, David K Wright

Journal article  |  2021  |  Brain Imaging and Behavior: an international journal

Pediatric traumatic brain injury (pTBI) is a major community health concern. Due to ongoing maturation, injury to the brain at a y..

ET-1 INDUCED FOCAL ISCHEMIA IN ADULT RATS CAUSES CHANGES IN BRAIN VOLUME AND HIPPOCAMPAL NEUROGENESIS UP TO 12 MONTHS FOLLOWING INJURY.

C Ermine, K O'Brien, J Kauhausen, S Frausin, A Oman, V Brait, W Syeda, D Wright, E Werden, L Johnston, J Nithianantharajah, A Brodtmann, L Thompson

Conference Proceedings  |  2020  |  INTERNATIONAL JOURNAL OF STROKE

Predicting individual improvement in schizophrenia symptom severity at 1-year follow-up: Comparison of connectomic, structural, and clinical predictors

Akhil Kottaram, Leigh A Johnston, Ye Tian, Eleni P Ganella, Liliana Laskaris, Luca Cocchi, Patrick McGorry, Christos Pantelis, Ramamohanarao Kotagiri, Vanessa Cropley, Andrew Zalesky

Journal article  |  2020  |  Human Brain Mapping

In a machine learning setting, this study aims to compare the prognostic utility of connectomic, brain structural, and clinical/de..

Microstructural correlates of 23Na relaxation in human brain at 7 Tesla.

Scott C Kolbe, Warda Syeda, Yasmin Blunck, Rebecca Glarin, Meng Law, Leigh A Johnston, Jon O Cleary

Journal article  |  2020  |  Neuroimage

23Na provides the second strongest MR-observable signal in biological tissue and exhibits bi-exponential T2∗ relaxation in micro-e..

Compressed sensing effects on quantitative analysis of undersampled human brain sodium MRI

Yasmin Blunck, Scott C Kolbe, Bradford A Moffat, Roger J Ordidge, Jon O Cleary, Leigh A Johnston

Journal article  |  2020  |  Magnetic Resonance in Medicine

Purpose The clinical application of sodium MRI is hampered due to relatively low image quality and associated long acquisition tim..