Technological analysis and comparison for dose monitoring and control systems of two types of linear accelerators
10.3969/J.ISSN.1672-8270.2017.05.008
- VernacularTitle:医用直线加速器剂量监测与控制系统的技术分析
- Author:
Minghuai WANG
;
Zhiquan TANG
- Keywords:
Medical linear accelerator;
Dose monitoring and control;
Ionization chamber;
Dosimetry;
Beam steering
- From:
China Medical Equipment
2017;14(5):27-33
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze and compare the dose monitoring and control systems of two types of medical linear accelerator systematically from the view of mechanical and electrical engineering, and establish the method of the quality assurance of the dosimetry system and the solution in the routine maintenance.Methods: To systematically compare and analyze the system of dose monitoring and control for two types of linear accelerators (Precise Elekta and C-series of Varian Medical Systems) from twofold aspects that included machine physics and electric engineering of medical linear accelerators.Results:The monitoring system that took ionization chamber as center was established between connotation of machine physics and concrete realization of electromechanical engineering, and explained the difference and similarity between open type and sealed type of ionization chamber, and the theory that Precise series needn't be serviced by PFN.Conclusion: Based on the analysis of ionization chambers structure of medical linear accelerators on the principle of quality assurance system, proposed dosimetric testing and adjustment method, and provide reference for the establishment of quality assurance system and technical procedures of the maintenance engineering.
