Development and international multicentre pilot testing of a postal dosimetry audit methodology for high dose rate brachytherapy.

ABSTRACT:

Background and purpose

Dosimetry audits are essential for reducing errors in brachytherapy. A postal dosimetry audit methodology was developed and tested in an international multicentre pilot, to assess the accuracy of the Reference Air Kerma Rate of ¹⁹²Ir and ⁶⁰Co brachytherapy sources.

Materials and methods

A compact phantom made of polymethyl methacrylate was developed to accommodate two catheters, a radiophotoluminescence dosimeter (RPLD) for dose measurements and a Gafchromic (RTQA2) film strip for source position verification. Deviations of the audit setup from TG-43 conditions were quantified experimentally and compared to previous Monte Carlo (MC) simulations. A measurement uncertainty budget was estimated for the RPLD analysis. The methodology

SUBMITTER: Dimitriadis A 

PROVIDER: S-EPMC11570846 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature