Dosimetry study of intensity modulated radiation therapy for left side breast cancer
- VernacularTitle:左侧乳腺癌调强放疗的剂量学研究
- Author:
Xiaona XU
;
Hao WU
;
Shukui HAN
- Publication Type:Journal Article
- Keywords:
Breast neoplasms/surgery;
Partial mastectomy;
Breast neoplasms/radiotherapy;
Intensity modulation radiation therapy;
Heart/dosimetry;
Breast/dosimetry
- From:
Chinese Journal of Radiation Oncology
1993;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compared intensity modulated radiation therapy (IMRT) with conventional radiotherapy(CR) for the left side breast cancer after breast-conserving surgery in regard to the homogeneity of dose in the target area, cardiac dose and irradiation volume in the target area. Methods Thirty-eight patients received inverse planning of IMRT with dynamic multi-leaf collimation (dMLC). Prescription dose was 46Gy in breast volume with X-ray, and added electron boost dose was 14Gy in the tumor bed, with a total dose of 60Gy. Clinical target volume(CTV) and heart were evaluated with dose-volume histograms(DVH) in the two plans, with the t test taken with SPSS 11.0. Results Average received dose of 95% breast volume(D 95) was (4541?34),(4517?62)cGy, volume of 105% of dose prescription(V 105%) was 17.5%?17.6%,29.4%?26.3%, while V 110% was 0.3%?0.8%,3.7%?8.2% with IMRT and CR, respectively. Received 30Gy by the heart(V 30) was 4.6%?4.3%,18.8%?12.2%(P
