The dose verification of external electrically-driven multi-leaf collimator in the treatment plan of IMRT
10.3969/J.ISSN.1672-8270.2017.10.008
- VernacularTitle:外挂电动多叶光栅调强放射治疗计划的剂量验证
- Author:
huai Zi HE
1
;
hua Feng LIU
;
sheng Guo DAI
Author Information
1. 贺州市人民医院放射治疗科 广西 贺州 542800
- Keywords:
External electrically-driven MLC;
IMRT;
Dose verification;
Medical linear accelerator;
Radiotherapy
- From:
China Medical Equipment
2017;14(10):26-29
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To verify the dose of static and dynamic intensity modulated radiotherapy (IMRT) through 2-dimension ionization chamber matrix after external electrically-driven multi-leaf collimator (MLC) was installed in KB1800 medical linear accelerator. Methods: 40 patients who need receive IMRT were divided into static IMRT group (20cases) and dynamic IMRT group (20cases) as the random number table. The ionization chamber was applied to implement scale dose, and solid water and 2-D ionization chamber matrix was applied to verify dose. Besides, the feasibility of static and dynamic IMRT were compared and researched.Results: The verification results of plane dosage of static IMRT plan and dynamic IMRT plan showed that the passing rates both of them were above 90.0%, and the verification of intensity modulated dosimetry of medical electric linear accelerator KB1800 with external electric MLC was consistent with standard.Conclusion:After the external electrically-driven MLC is installed on the accelerator, the dosage of IMRT can achieve the verification standard, and it can be applied to clinical treatment and can satisfy the requirement of clinical radiotherapy.
