CAJ | 학술논문

目的：评价使用双下肢辅助固定装置固定盆腔肿瘤患者时，提高摆位精度的可行性。方法：30例需要盆腔照射的患者分别使用常规热塑体膜固定组（常规组）和常规热塑体膜配合双下肢辅助固定装置组（辅助固定组），使用模拟机验证片与治疗计划系统的数字重建射野图像，对两种不同体膜固定方法的摆位精度差异进行成组t检验；采用问卷形式对两组患者进行舒适度情况调查。结果：常规组和辅助固定组在左右、头脚和前后方向摆位误差分别为（2.8±1.5）mm、（1.4±0.9）mm，（4.4±2.2）mm、（1.2±1.2）mm和（2.2±1.3）mm、（1.9±1.0）mm；两组患者舒适度相似。结论：使用双下肢辅助固定装置能明显减少盆腔患者摆位误差。
목적：평개사용쌍하지보조고정장치고정분강종류환자시，제고파위정도적가행성。방법：30례수요분강조사적환자분별사용상규열소체막고정조（상규조）화상규열소체막배합쌍하지보조고정장치조（보조고정조），사용모의궤험증편여치료계화계통적수자중건사야도상，대량충불동체막고정방법적파위정도차이진행성조t검험；채용문권형식대량조환자진행서괄도정황조사。결과：상규조화보조고정조재좌우、두각화전후방향파위오차분별위（2.8±1.5）mm、（1.4±0.9）mm，（4.4±2.2）mm、（1.2±1.2）mm화（2.2±1.3）mm、（1.9±1.0）mm；량조환자서괄도상사。결론：사용쌍하지보조고정장치능명현감소분강환자파위오차。
Objective:Evaluating patients with pelvic tumors using a fixed lower limbs auxiliary fixtures,to im-prove the feasibility of positioning accuracy. Methods:Thirty patients with pelvic tumors were randomly divided into conventional thermoplastic membrane fixation group( conventional group,CG)and conventional thermoplastic mem-brane with lower limbs auxiliary fixture group( auxiliary fixation group,AFG). Using simulator for position calibration and center field digital image reconstruction from treatment planning system. Then compare the set-up accuracy of two groups with different body membrane fixation methods. Results:Set-up error in the left-right,head-foot,ante-rior-posterior direction were(2. 8 ± 1. 5)mm and(1. 4 ± 0. 9)mm(P<0. 02),(4. 4 ± 2. 2)mm and(1. 2 ± 1. 2) mm(P<0. 001),(2. 2 ± 1. 3)mm and(1. 9 ± 1. 0)mm(P>0. 05)in conventional group and auxiliary fixed group;Patientˊs comfort was similar in the two groups. Conclusion:Lower limbs auxiliary fixtures can significantly reduce pelvic patient positioning errors.