Comparison of Three Different Methods to Measure the Surface Dose of Intra-operative Radiotherapy
10.3969/j.issn.1005-202X.2010.01.014
- VernacularTitle:三种不同方法测量术中放疗表面剂量的比较研究
- Author:
Ruiyao JIANG
;
Guofeng HUANG
;
Fei XIONG
;
Shen FU
- Publication Type:Journal Article
- Keywords:
intra-operative radiation therapy;
surface dose;
ionization chamber
- From:
Chinese Journal of Medical Physics
2010;27(1):1625-1627
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze and compare the results and precision of three different methods to measure the surface dose of Intra-operative radiotherapy,and conclude some experience of clinical application in Intra- operative radiotherapy.Methods:The study compared the results of measurement surface dose in phantom through three ways:cylindrical ionization chamber with 3D water scanner,plane-parallel ionization chamber,and MOSFET detector.Results:the measurement results of plane-parallel-chamber and MOSFET detector have a better consistency,and the maximum deviation is -1.13%.The method with cylindrical ionization chamber and 3D water scanner has larger deviation compare to the other two methods,the deviation range from-5.55%to 4.55%.Conclusion:The methods of plane-parallel chamber and MOSFET detector to measure the surface dose of Intra-operative radiotherapy can obtain accurate results.
