肿瘤预防与治疗2025，Vol.38Issue(7)：598-603,6.DOI:10.3969/j.issn.1674-0904.2025.07.006
乳腺托架治疗乳腺癌两种不同体位固定方式的摆位误差分析
Setup Error Analysis of Two Different Body Fixation Modes in Breast Bracket Treatment of Breast Cancer
陈晓飞 1杜司续 1李海亮 1樊楚宁 1齐长圳 1刘森 1孙斌 1刘其腾 1高玉艳1
作者信息
- 1. 101100 北京,首都医科大学附属北京潞河医院放射治疗科
- 折叠
摘要
Abstract
Objective:To retrospectively analyze the effect of different fixation positions on the setup errors in breast cancer patients underwent breast bracket positioning.Methods:Sixty breast cancer patients who received radiotherapy with breast bracket fixation in our department from May 2023 to March 2024 were included.Patients were assigned to the double-arm group(30 cases)and the single-arm group(30 cases)according to the fixation method of body positioning.Both upper limbs of patients in the double-arm group were immobilized,while upper limb of the affected side of patients in the single-arm group was immobilized.All patients were treated with intensity-modulated radiotherapy,and cone beam computed tomography images were acquired for verification duning the first 3 radiotherapy courses and weekly thereafter during the radiotherapy course,then aligned with computed tomography simulated localization reconstruction images to obtain the patient's image in the anterior-posterior(AP)direction,the superior-inferior(SI)direction,and the left-right(LR)direction.Results:In the double-arm group,20.0％(6/30)patients underwent modified radical surgery,80.0％(24/30)patients underwent breast-conserving surgery,while in the single-arm group,36.7％(11/30)patients underwent modified radical surgery,63.3％(19/30)patients underwent breast-conserving surgery,and there was no statistical significance in the difference between the two groups(P=0.156).No statistically significant differences were observed in setup errors between the first three and last three fractions along AP,SI,and LR directions.The median setup error in the LR direction was 0.2(0.1,0.3)cm in the double-arm group and 0.3(0.1,0.4)cm in the single-arm group,with a statistically significant difference(P=0.046).The median setup error in the AP direction was 0.2(0.1,0.3)cm for both groups,with no statistically significant difference(P=0.256).Similarly,in the SI direction,the median setup error was 0.2(0.1,0.3)cm for both groups(P=0.097).In the single-arm group,the median setup error in the LR direction was significantly higher for patients receiving modified radical mastectomy(0.30±0.16)cm compared to breast-conserving surgery(0.24±0.18)cm,with a statistically significant difference(P=0.009).Conclusion:In breast cancer patients underwent breast brackets,the setup error in the double-arm group is smaller than that in the single-arm group,and breast cancer bracket positioning using the double-arm body fixation mode of radiotherapy had higher accuracy.When the breast bracket is fixed in single arm,the setup error of breast-conserving surgery is smaller than that of modified radical surgery.关键词
乳腺癌/乳腺托架/上肢体位固定/放射治疗/手术方式/摆位误差Key words
Breast cancer/Breast brace/Upper limb position fixation/Radiotherapy/Surgical approach/Setup error分类
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陈晓飞,杜司续,李海亮,樊楚宁,齐长圳,刘森,孙斌,刘其腾,高玉艳..乳腺托架治疗乳腺癌两种不同体位固定方式的摆位误差分析[J].肿瘤预防与治疗,2025,38(7):598-603,6.
