Abstract

Info

Title:: Development of a software for dosimetric comparison according to IAEA technical report series No.430

Author(s):: XIE Zhao1; 2; HU Jinyou1; 2; ZOU Lian1; 2; YIN Yunpeng1; 2; YU Luxin1; 2; LUO Kelin1; 2; 1. Department of Oncology, Sichuan Provincial People’s Hospital, Chengdu 610072, China; 2. Joint Laboratory for Medical Physics, Sichuan Provincial People’s Hospital, Chengdu 610072, China

Keywords:: Keywords: Eclipse; Python; percentage depth dose; off-axis dose; dosimetric parameter

Abstract:: Abstract: Objective To realize a rapid comparison between calculated and measured percentage depth dose (PDD) and off-axis dose (OAD) after the modeling by treatment planning system as well as the comparison of different measurements during the maintenance of medical accelerators once per year for determining the accuracy of accelerator modeling data and the consistency of measurements. Methods Object-oriented Python program was used to develop a ComparePO (CPO) software for PDD and OAD comparisons according to IAEA technical report series No.430. CPO was composed of document preparation module, PDD module, OAD module, comparison parameter visualization and report generation module. Results The successful execution of CPO in clinic and the accuracy of reports were firstly verified. Secondly, CPO was utilized for the quality maintenance of two newly installed accelerators and the dose data testing after ionization chamber replacement. The reports of PDD and OAD comparisons were quickly generated by CPO, thereby proving guidance for radiation therapy physicists. Conclusion CPO which is a user-friendly and powerful software is able to generate comparison reports of PDD and OAD automatically and rapidly, significantly shortening checking time and improving the working efficiency of radiation therapy physicists.