Comparison of conventional and conformal radiotherapy and different irradiation technique by 3D-TPS for esophageal carcinoma : a dosimetric study
- VernacularTitle:食管癌常规放疗与三维适形放疗比较及4种不同设野技术的剂量学研究
- Author:
Xiaomao GUO
;
Xin MEI
;
Guopei ZHU
- Publication Type:Journal Article
- Keywords:
3-D Conformal radiotherapy;
Esophageal carcinoma;
dosimetry
- From:
China Oncology
2001;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Purpose:To obtain the optimum irradiation technique in different plans of conventional radiotherapy(2DRT)and conformal radiotherapy(3DCRT)and between different conformal radiotherapy techniques for esophageal carcinoma as compared by 3D-TPS.Methods:10 patients with esophageal carcinoma were enrolled in this study.The conventional treatment plan and four conformal technique plans were created for each patient.Plan 1 was the same as the 2DRT,plan 2 consisted of anterior and two posterior oblique fields,plan 3 consisted of posterior and two anterior oblique fields,plan 4 consisted of 2 dynamic arc fields.Different plans were compared using DVH.Results:①On average,PTV of 2DRT was the same as that of 3DCRT in DVH.The difference in maximum dose to spinal cord was obvious.The left lung dose in D_(mean)?D_(min)?V_(30) in 2DRT was significantly increased as compared to 3DCRT(P
