The electronic portal imaging device for dosimetric verification of intensity-modulated radiation therapy
10.3760/cma.j.issn.0254-5098.2013.01.014
- VernacularTitle:电子射野影像系统用于调强放疗剂量验证
- Author:
Ruijie YANG
;
Junjie WANG
;
Feng XU
;
Xile ZHANG
- Publication Type:Journal Article
- Keywords:
Electronic portal imaging device;
Intensity-modulated radiation therapy;
Dosimetric verification
- From:
Chinese Journal of Radiological Medicine and Protection
2013;(1):55-57
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the feasibility and efficiency of electronic portal imaging device for dosimetric verification of intensity-modulated radiation therapy.Methods 10 patients treated with intensity-modulated radiation therapy were verified using the electronic portal imaging device of aS1000 from Varian and MatriXX from IBA.The gamma pass rate and time needed was recorded and compared.Results The gamma pass rate at 3％/3 mm was 95.82％ (94.77％-96.86％) and 99.08％ (98.72％-99.45％) with aS1000 and MatriXX,respectively.The average time needed for dosimetric verification with aS1000 and MatriXX was 12.7 and 47.8 min,respectively.Conclusions The electronic portal imaging device of aS1000 has the potential as a tool for IMRT dosimetric verification.It is more convenient and efficient than MatriXX.
