Phantom scatter corrections of radiochromic films in high-energy brachytherapy dosimetry: a Monte Carlo study

Radiological Physics and Technology
Mishra Subhalaxmi, T Palani Selvam

Abstract

Our aim in this study was to calculate Monte Carlo-based phantom scatter corrections of various radiochromic films for different solid phantoms for high-energy brachytherapy sources. Brachytherapy sources (60)Co, (137)Cs, (192)Ir, and (169)Yb and radiochromic films EBT, EBT2 (lot 020609 and lot 031109), RTQA, XRT, XRQA, and HS were investigated in this study. The solid phantom materials investigated were PMMA (polymethylmethacrylate), polystyrene, solid water, virtual water, plastic water, RW1, RW3, A150, and WE210. Monte Carlo-based user codes DOSRZnrc and FLURZnrc of the EGSnrc code system were employed in the present work. For the (60)Co source, the polystyrene, plastic water, solid water, virtual water, RW1, RW3, and WE210 phantoms were water equivalent for the investigated films, but showed distance-dependent values for XRT and XRQA films. For the (137)Cs and (192)Ir sources, the solid water, virtual water, RW1, RW3, and WE210 phantoms were water equivalent for the investigated films, but showed distance-dependent values for XRT and XRQA films. For these sources, the remaining phantoms showed distance-dependent values for all of the films investigated. For the (169)Yb source, all of the investigated phantoms showed distanc...Continue Reading

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Jan 16, 2014·Journal of Applied Clinical Medical Physics·Mishra Subhalaxmi, T Palani Selvam
Dec 11, 2014·Journal of Applied Clinical Medical Physics·Mishra Subhalaxmi, T Palani Selvam

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Citations

Jan 15, 2015·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Antony L PalmerAndrew Nisbet
Aug 21, 2020·Radiological Physics and Technology·Subhalaxmi Mishra, T Palani Selvam

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