Effect of 16 Slice Spiral CT Simulation Position on the Positioning Accuracy of Breast Cancer Patients after Breast Conserving Surgery

DONG Wenbo

doi:10.14033/j.cnki.cfmr.2025.11.018

Abstract：Objective:To analyze the influence of 16 slice spiral CT simulation position on the positioning accuracy of breast cancer patients receiving radiotherapy after breast conserving surgery.Method:From January 2021 to December 2023,102 patients receiving radiotherapy after breast conserving surgery for breast cancer in Zaozhuang City Shizhong District People's Hospital were selected and randomly divided into two groups,51 cases in each group.The positioning methods for the control group and observation group used X-ray simulator positioning and 16 slice spiral CT simulation positioning,respectively.The positioning accuracy,errors in different directions,beauty,inspection satisfaction rate,and survival of the two groups were compared.Result:The average scanning time and positioning time of the observation group were shorter than those of the control group,and the average isocentric error was smaller than that of the control group,the differences were statistically significant(P<0.05).The X,Y and Z direction errors in the observation group were lower than those in the control group,and the differences were statistically significant(P<0.05).The beauty condition of the observation group was better than that of the control group,and the difference was statistically significant(P<0.05).The examination satisfaction of the observation group was higher than that of the control group,and the difference was statistically significant(P<0.05).The scores of all dimensions of EORTC quality of life questionnaire-core 30(QLQ-C30)scale in the observation group were higher than those in the control group,and the differences were statistically significant(P<0.05).Conclusion:For patients with breast cancer who received radiotherapy after breast conserving surgery,the use of 16 row spiral CT under the simulation of positioning can improve the accuracy of positioning,improve the satisfaction and beauty,and improve the quality of life.