Application of Statistical Process Control in Evaluation of Performance for Beam-matched Medical Electron Linacs.
10.3969/j.issn.1671-7104.2021.01.023
- Author:
Qing XIAO
1
;
Guangjun LI
1
;
Xiangbin ZHANG
1
;
Sen BAI
1
Author Information
1. Department of Radiotherapy, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041.
- Publication Type:Journal Article
- Keywords:
beam matching;
medical electron linac;
quality assurance;
statistical process control;
volumetric modulated arc therapy
- MeSH:
Electrons;
Particle Accelerators;
Quality Assurance, Health Care;
Radiotherapy Dosage;
Radiotherapy Planning, Computer-Assisted;
Radiotherapy, Intensity-Modulated
- From:
Chinese Journal of Medical Instrumentation
2021;45(1):109-113
- CountryChina
- Language:Chinese
-
Abstract:
Clinically, beam matching can greatly improve the flexibility and efficiency of treating patients between different medical electron linacs. However, in addition to the regular quality assurance (QA) test of the machine performance of linacs, there is still a lack of comprehensive evaluation of the clinical radiotherapy performance of beam-matched linacs. In this paper, the performance of volumetric modulated arc therapy (VMAT) between three closely matched linacs was evaluated by statistical process control (SPC) technology. It was found that the average and median γ passing rates of the VMAT QA processes of the three linacs had little difference, but the process capability levels were at three different levels. The results show that SPC technology can effectively evaluate the performance of beam matching for medical electron linacs, improve the patient-specific VMAT QA processes, and guide clinical decision-making.
