Journal article

A novel high-resolution 2D silicon array detector for small field dosimetry with FFF photon beams

G Biasi, M Petasecca, S Guatelli, N Hardcastle, M Carolan, V Perevertaylo, T Kron, AB Rosenfeld

PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS | ELSEVIER SCI LTD | Published : 2018

Abstract

PURPOSE: Flattening filter free (FFF) beams are increasingly being considered for stereotactic radiotherapy (SRT). For the first time, the performance of a monolithic silicon array detector under 6 and 10 MV FFF beams was evaluated. The dosimeter, named "Octa" and designed by the Centre for Medical Radiation Physics (CMRP), was tested also under flattened beams for comparison. METHODS: Output factors (OFs), percentage depth-dose (PDD), dose profiles (DPs) and dose per pulse (DPP) dependence were investigated. Results were benchmarked against commercially available detectors for small field dosimetry. RESULTS: The dosimeter was shown to be a 'correction-free' silicon array detector for OFs an..

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Grants

Awarded by National Health and Medical Research Council of Australia


Funding Acknowledgements

We would like to acknowledge the Gross Foundation and National Health and Medical Research Council of Australia grant APP 1030159 for financial support.