丁字鞋固定技术在下肢肿瘤体位固定中的应用

发布时间：2018-03-17 18:33

本文选题：丁字鞋固定技术　切入点：下肢肿瘤体　出处：《第三军医大学学报》2015年24期 　论文类型：期刊论文

【摘要】：目的探讨下肢肿瘤放疗中利用丁字鞋固定体位相较于常规负压垫固定对摆位时间和摆位精度的影响。方法选择下肢肿瘤患者20例,简单随机分为A组(10例)和B组(10例),A组用真空负压垫固定,B组用丁字鞋定位,每例患者治疗前均采用锥形束CT(cone beam CT,CBCT)扫描配准纠正摆位误差,统计每例患者的摆位误差和摆位时间,并对2组数据进行统计分析。结果丁字鞋固定组摆位时间明显低于负压垫固定组的摆位时间(P0.05);CBCT图像配准结果中,丁字鞋固定组在Lat左右和Lng前后方向上均优于负压垫固定组[(0.25±0.19 vs 0.44±0.16)cm,P=0.028;(0.27±0.18 vs 0.58±0.13)cm,P0.01]。结论下肢肿瘤放疗定位采用丁字鞋定位技术可以减小摆位难度,缩短摆位时间,减少摆位误差,值得在临床中推荐使用。
[Abstract]:Objective to investigate the effect of T shoe fixation on the setting time and accuracy of lower extremity tumor radiotherapy compared with conventional negative pressure pad. Methods 20 patients with lower extremity tumor were selected. The patients were divided into two groups: group A (n = 10) and group B (n = 10). Group B was fixed with vacuum negative pressure pad and group B was fixed with T-shoes. Before treatment, each patient was treated with cone-bundle CT(cone beam CT) scanning registration to correct the error of pendulum position. The positioning error and time of each patient were counted and the two groups of data were statistically analyzed. Results the time of setting position in the T shoe fixation group was significantly lower than that in the negative pressure pad fixation group (P 0.05) and the result of CBCT image registration was lower than that in the negative pressure pad group. The T-shoe fixation group was superior to the negative pressure pad group in the direction of Lat and Lng [0. 25 卤0. 19 vs 0. 44 卤0. 16 cm ~ (-1)] (0. 27 卤0. 18 vs 0. 58 卤0. 13 cm ~ (-1) P0.01). Conclusion the T shoe positioning technique can reduce the difficulty, shorten the time and decrease the error of lower extremity tumor radiotherapy. It is recommended for clinical use.
【作者单位】：第三军医大学新桥医院全军肿瘤诊治研究所;
【分类号】：R730.55

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