Investigating the impact of the effective point of measurement for plane-parallel ionization chambers in clinical proton beams

• Published in: Physics in medicine & biology Vol. 70; no. 1; pp. 15014 - 15026
• Main Authors: Baumann, Kilian-Simon, Lourenço, Ana, Wulff, Jörg, Vilches-Freixas, Gloria, Palmans, Hugo
• Format: Journal Article
• Language: English
• Published: England IOP Publishing 27.12.2024
• Subjects: effective point of measurement; GEANT4; Humans; Monte Carlo; Monte Carlo Method; proton reference dosimetry; proton therapy; Proton Therapy - instrumentation; Proton Therapy - methods; Protons; Radiometry - instrumentation; Radiotherapy Dosage; response functions; Water; response functions; GEANT4; proton reference dosimetry; proton therapy; effective point of measurement; Monte Carlo
• ISSN: 0031-9155; 1361-6560; 1361-6560
• DOI: 10.1088/1361-6560/ad9e7c

Objective. To investigate the impact of the positioning of plane-parallel ionization chambers in proton beams on the calculation of the chamber-specific factor f Q and, hence, the beam quality correction factor k Q , Q 0 . Approach. Monte Carlo simulations were performed to calculate the chamber-spe...