Application of joint fixation with breast bracket and body phantom to breast cancer radiotherapy after breast-conserving operation

VernacularTitle:乳腺托架与体膜联合固定在乳腺癌保乳术后放疗中的应用
Author: Senlin YE ; Zhiling WANG ; Ting LIANG
Publication Type:Journal Article
Keywords: breast cancer; breast bracket; set-up error
From: Chinese Medical Equipment Journal 2015;36(5):79-81
CountryChina
Language:Chinese
Abstract: Objective To apply joint fixation with breast bracket and body phantom to breast cancer radiotherapy after breast-conserving operation.Methods Totally 36 patients after breast-conserving operation underwent joint fixation with breast bracket and body phantom, whose cone beam computed tomography (CBCT) images were obtained with on board imager (OBI) before radiotherapy. The errors between the CBCT images and planning CT images were acquired by matching.Results The setup errors in the directions of left-right (X), head-foot (Y) and belly-back (Z) were (2.6±0.783), (3.0± 1.027) and (1.6 ±0.872)mm respectively, and the percentages that the setup errors were more than 5 mm were 16.5%, 20.7% and 9.1% respectively.Conclusion Joint fixation with breast bracket and body phantom may decrease the setup error in radiotherapy after breast-conserving operation, especially in the belly-back direction, and thus has high clinical values.