Benchmarking Radiochromic EBT4 Film for Clinical Proton DosimetryRadiochromic Films for Proton Dosimetry.

ABSTRACT:

Purpose

This study presents an evaluation of the dosimetric performance of radiochromic EBT4 films for clinical proton therapy, benchmarked against the widely used EBT3 model. Key parameters assessed include dose-response behavior, energy dependence, sensitivity, reproducibility, temporal stability, and longitudinal and lateral linear energy transfer (LET) effects.

Methods

EBT4 films from three independent batches and one batch of EBT3 films were irradiated using monoenergetic therapeutic clinical proton beams ranging from 70 to 225 MeV. Film irradiation was done at various depths in a solid water phantom, while doses from 0.25 to 20 Gy were delivered. Following scanning, the film responses were quantified as net optical density and calibrated with absolute dose measurements

SUBMITTER: Rahimi R 

PROVIDER: S-EPMC12818114 | biostudies-literature | 2026 Mar

REPOSITORIES: biostudies-literature