CAJ | 학술논문

目的通过对胸部肿瘤放疗体膜固定方法的改进,进一步提高胸部肿瘤放疗摆位精度.方法将50例胸部肿瘤患者随机均分至常规体膜固定组(常规组,无电极贴)和改良体膜固定组(改良组,电极贴).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.结果常规组和改良组左右、上下、前后方向摆位误差分别为2.5±1.5和2.4 ± 1.4(P =0.010)、4.4±2.0和2.2±1.2(P =0.000)、2.2±1.3和2.1±1.0(P=0.100).结论改良体膜固定法与常规体膜法相比提高了放疗重复摆位精度,具有临床推广价值.
목적 통과대흉부종류방료체막고정방법적개진,진일보제고흉부종류방료파위정도.방법 장50례흉부종류환자수궤균분지상규체막고정조(상규조,무전겁첩)화개량체막고정조(개량조,전겁첩).사용모의궤험증편여치료계화계통적수자중건사야도상,대량충불동체막고정방법적파위정도차이진행성조t검험.결과 상규조화개량조좌우、상하、전후방향파위오차분별위2.5±1.5화2.4 ± 1.4(P =0.010)、4.4±2.0화2.2±1.2(P =0.000)、2.2±1.3화2.1±1.0(P=0.100).결론 개량체막고정법여상규체막법상비제고료방료중복파위정도,구유림상추엄개치.
Objective To study the set-up accuracy in radiotherapy of thoracic neoplasms by improving the body immobilization method.Methods Fifty patients with thoracic neoplasms were randomly divided into conventional group (without electrode paste) and improved group (with electrode paste).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 methods by grouped t-test.Results Set-up error in the left-right,superior-inferior,anterior-posterior direction were 2.5 ± 1.5 and 2.4 ± 1.4(P =0.010),4.4 ± 2.0 and 2.2 ± 1.2 (P =0.000),2.2 ± 1.3 and 2.1 ± 1.0 (P =0.100) in conventional group and improved group,respectively.Conclusions The improved body immobilization method improves setup accuracy in radiotherapy for thoracic neoplasms which also will be effective for clinical treatment.