Influencing Factors and Intervention Strategies of Placement Error of Breast Cancer
Objective To explore and analyze influencing factors and intervention strategies of placement error of breast cancer.Methods The paper reviewed and analyzed clinical data of 110 patients with breast cancer with radiotherapy in radiotherapy department of Chifeng Hospital from February 2020 to February 2022,and divided them into＞60 group(n=61)and≤ 60 group(n=49)according to age of patients.According to different fixation methods,patients were divided into vacuum pad group(n=42)and breast bracket combined with hot compress film group(n=68),and into left group(n=64)and right group(n=46)according to affected side of breast cancer,and into breast conserving surgery group(n=51)and resection surgery group(n=59)according to different surgical resection methods.All patients were treated with cone beam computed tomography(CT)before intensity modulated radiation therapy.Orthogonal image data were acquired before each treatment and matched with digital reconstructed images(DRR)to obtain placement errors.Based on this,the paper explored and analyzed influence of different fixation methods(vacuum pad,breast bracket combined with hot compress film),surgical methods(breast conserving surgery,resection surgery),and affected sides(left and right)on placement errors,and analyzed influencing factors.Results There was no statistically significant difference in placement errors in three axis directions among different surgical resection groups,(P＞0.05).Under breast conserving procedure,placement error in Y-axis direction in＞60 group was higher than≤ 60 group,difference was statistically significant,(P＜0.05).There was no statistically significant difference in placement error of other axes under same surgical methods,(P＞0.05).Under the same surgical procedure,there was no statistically significant difference in placement error between different fixation methods,(P＞0.05).Placement error of left breast cancer patients on Y-axis was higher than right breast cancer patients on Y-axis.There was statistically significant for influence of tumor position on Y-axis placement error,(P＜0.05).Conclusion Affected side of breast cancer,operation mode and fixation mode of breast cancer patients with intensity-modulated radiotherapy can have effect on placement error of breast cancer patients.During actual clinical practice,it is necessary to carry on reasonable selection and matching according to individual conditions of patients,to further reduce placement error of breast cancer patients,and improve accuracy of radiotherapy.
Breast cancerPlacement errorInfluencing factorsIntervention strategies
万方数据
维普
