Effect of extended field-of-view approaches on the accuracy of stopping power ratio estimation for single-energy computed tomography simulators
Journal
Journal of applied clinical medical physics
Date Issued
2023-05-11
Author(s)
Lin, Chang-Shiun
Tsai, Yi-Chun
Chen, Liang-Hsin
Wu, Chia-Jung
Abstract
Extended field-of-view (eFOV) methods have been proposed to generate larger demonstration FOVs for computed tomography (CT) simulators with a limited scanning FOV (sFOV) size in order to ensure accurate dose calculation and patient collision avoidance. Although the efficacy of these strategies has been evaluated for photon applications, the effect of stopping power ratio (SPR) estimation on proton therapy has not been studied. This study investigated the effect of an eFOV approach on the accuracy of SPR to water estimation in homogeneous and heterogeneous phantoms.
Subjects
CT; Hounsfield unit; conversion curve; extended field-of-view; proton; stopping power ratio
SDGs
Publisher
WILEY
Type
journal article