医学信息
醫學信息
의학신식
Medical Information
2015年
39期
36-36
,共1页
林松焕%肖应%吴修洪
林鬆煥%肖應%吳脩洪
림송환%초응%오수홍
床轴距%常规模拟定位%放疗%体部肿瘤%后野治疗深度
床軸距%常規模擬定位%放療%體部腫瘤%後野治療深度
상축거%상규모의정위%방료%체부종류%후야치료심도
Couch-to-isocentre distance%Conventional simulation%Radiotherapy%Body tumor%Depth of posterior beam
目的：探索体部肿瘤放疗患者在模拟定位与放疗时床轴距变化对后野治疗深度的影响。方法将50例体部肿瘤放疗患者随机分成观察组与对照组，观察组患者在模拟定位及放疗时采用真空垫固定，对照组体部肿瘤患者仰卧于床板无其他固定装置。测量两组患者模拟定位及放疗时床轴距的数值及其差值变化，观察床轴距变化对体部肿瘤放疗患者后野治疗深度的影响。结果观察组在模拟定位与放疗时的床轴距差值较对照组小，两组床轴距差值的差异有统计学意义，<0.05。结论采用真空垫固定后放疗时，治疗床下沉程度更接近模拟定位时床板下沉度，床轴距变化对放疗时后野治疗深度影响减少，治疗更准确。
目的：探索體部腫瘤放療患者在模擬定位與放療時床軸距變化對後野治療深度的影響。方法將50例體部腫瘤放療患者隨機分成觀察組與對照組，觀察組患者在模擬定位及放療時採用真空墊固定，對照組體部腫瘤患者仰臥于床闆無其他固定裝置。測量兩組患者模擬定位及放療時床軸距的數值及其差值變化，觀察床軸距變化對體部腫瘤放療患者後野治療深度的影響。結果觀察組在模擬定位與放療時的床軸距差值較對照組小，兩組床軸距差值的差異有統計學意義，<0.05。結論採用真空墊固定後放療時，治療床下沉程度更接近模擬定位時床闆下沉度，床軸距變化對放療時後野治療深度影響減少，治療更準確。
목적：탐색체부종류방료환자재모의정위여방료시상축거변화대후야치료심도적영향。방법장50례체부종류방료환자수궤분성관찰조여대조조，관찰조환자재모의정위급방료시채용진공점고정，대조조체부종류환자앙와우상판무기타고정장치。측량량조환자모의정위급방료시상축거적수치급기차치변화，관찰상축거변화대체부종류방료환자후야치료심도적영향。결과관찰조재모의정위여방료시적상축거차치교대조조소，량조상축거차치적차이유통계학의의，<0.05。결론채용진공점고정후방료시，치료상하침정도경접근모의정위시상판하침도，상축거변화대방료시후야치료심도영향감소，치료경준학。
Objective To explore the ef ect of couch-to-isocentre distance change in simulation and radiotherapy for patients with body tumor on posterior beam depth.Methods 50 cases of patients with body tumor that treated in our department were randomly divided into two groups.The observation group used vacuum bag.The control group took supine position on the bed only.Analysed the change of couch-to-isocentre distance between the two grops when simulating and during the radiotherapy.Results The change of couch-to-isocentre distance when simulating and treating in observation group was not obvious when it was compared to control group. The dif erence between the two grops was statistical y significant.Conclusion The downward distance change of accelerater table and simulator bed in observation group is not obvious when treating with vacuum bag. The ef ect of couch-to-isocentre distance change on posterior beam depth is reduced and the radiotherapy accuracy is improved.
