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乳腺癌术后调强放疗颈胸一体固定的摆位误差分析
张彦新, 郇福奎, 朱耿强, 周科, 冯鑫, 万宝, 唐玉, 景灏, 王淑莲, 戴建荣
国家癌症中心/国家肿瘤临床医学研究中心/中国医学科学院北京协和医学院肿瘤医院放疗科 100021
Analysis of setup errors of postoperative intensity-modulated radiotherapy immobilized with integrated cervicothoracic board (mask) system in breast cancer patients
Zhang Yanxin, Huan Fukui, Zhu Gengqiang, Zhou Ke, Feng Xin, Wan Bao, Tang Yu, Jing Hao, Wang Shulian, Dai Jianrong
Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/ Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
Abstract：Objective To investigate the setup errors of postoperative radiotherapy immobilized with integrated cervicothoracic board (mask) system in breast cancer patients. Methods Thirty-two breast cancer patients treated with postoperative radiotherapy immobilized with integrated cervicothoracic board (mask) system were prospectively recruited in this study. Breast/chest wall (cw) and supra/infraclavicular nodal region (sc) were irradiated with intensity-modulated radiotherapy. CBCT location verification in radiotherapy and target areas of the breast/chest wall and upper and lower collarbone were carried out, respectively. The consistency between setup errors and the position of the upper and lower target areas of 239 CBCT images was analyzed. Results The translational setup errors of the breast/chest wall in the X-cw (left-right), Y-cw (superior-inferior), Z-cw (anterior-posterior) directions were (1.84±2.36)mm,(1.99±2.48) mm, and (1.75±1.86) mm, respectively. The translational setup errors of the supra/infraclavicular nodal region in the X-sc (left-right), Y-sc (superior-inferior), Z-sc (anterior-posterior) directions were (1.98±2.44) mm,(1.98±2.48) mm, and (1.71±1.79) mm, respectively. The differences of translational setup errors between the breast/chest wall and supra/infraclavicular nodal region in the X, Y, Z directions were (0.38±0.66) mm,(0.07±0.41) mm, and (0.45±0.92) mm, respectively. Conclusion For the breast cancer patients treated with postoperative radiotherapy covering breast/chest wall and supra/infraclavicular nodal region, the integrated cervicothoracic board (mask) immobilization system provides good reproducibility and yields Sfew setup errors.
Zhang Yanxin,Huan Fukui,Zhu Gengqiang et al. Analysis of setup errors of postoperative intensity-modulated radiotherapy immobilized with integrated cervicothoracic board (mask) system in breast cancer patients[J]. Chinese Journal of Radiation Oncology, 2021, 30(8): 835-840.
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2021, Vol. 30 
