Optical spectral analysis of radiochromic films irradiated with radiation therapy beams

Arash Darafsheh; Tianyu Zhao; Rao Khan

doi:10.1117/12.2545272

17 February 2020 Optical spectral analysis of radiochromic films irradiated with radiation therapy beams

Arash Darafsheh, Tianyu Zhao, Rao Khan

Proceedings Volume 11231, Design and Quality for Biomedical Technologies XIII; 112310I (2020) https://doi.org/10.1117/12.2545272
Event: SPIE BiOS, 2020, San Francisco, California, United States

Abstract

Radiochromic films, owing to their high spatial resolution, are well-suited for radiation therapy dosimetry and quality assurance purposes. However, their spectroscopic response to radiotherapy beams has not been comprehensively investigated, except for a limited subset of beam qualities. In this work, we explore the spectral response of the EBT3 and EBT-XD radiochromic film models to different clinical radiation beam qualities including photons and protons. The spectral response of EBT3 and EBT-XD films showed two peaks at 585 nm and 635 nm for both photon and proton irradiation. Beyond a certain batch- and model-dependent dose threshold a saturation behavior was observed in the primary absorption peak. For beam qualities studied in this work, the spectral response of proton-irradiated films showed a systematic under-response compared to their photon-irradiated counterparts in both EBT-3 and EBTXD radiochromic films models.

Citation Download Citation

Arash Darafsheh, Tianyu Zhao, and Rao Khan "Optical spectral analysis of radiochromic films irradiated with radiation therapy beams", Proc. SPIE 11231, Design and Quality for Biomedical Technologies XIII, 112310I (17 February 2020); https://doi.org/10.1117/12.2545272

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available