中国医药指南
中國醫藥指南
중국의약지남
CHINA MEDICINE GUIDE
2013年
10期
421
,共1页
王刚%张宗春%车亚妮%杨敬磊
王剛%張宗春%車亞妮%楊敬磊
왕강%장종춘%차아니%양경뢰
胶片%剂量验证%调强适形放疗
膠片%劑量驗證%調彊適形放療
효편%제량험증%조강괄형방료
Film%Dose verification%Intensity modulated radiation therapy
目的介绍和探讨调强放射治疗的胶片剂量验证方法,建立调强放射治疗的剂量验证体系.方法通过体模移植的方法分别用电离室在水模体中测量IMRT治疗计划某点的绝对剂量,利用胶片验证比较TPS输出剂量图与实际爆出的剂量图进行比较分析逆向计划系统剂量计算的准确性.结果所有患者的调强计划验证结果中等中心点剂量误差均在4%以内;相对剂量的验证以剂量偏差3%和3 mm距离偏差为控制标准,通过率均在90%以上.结论调强计划胶片剂量验证方法可以保证调强放疗计划的安全执行.
目的介紹和探討調彊放射治療的膠片劑量驗證方法,建立調彊放射治療的劑量驗證體繫.方法通過體模移植的方法分彆用電離室在水模體中測量IMRT治療計劃某點的絕對劑量,利用膠片驗證比較TPS輸齣劑量圖與實際爆齣的劑量圖進行比較分析逆嚮計劃繫統劑量計算的準確性.結果所有患者的調彊計劃驗證結果中等中心點劑量誤差均在4%以內;相對劑量的驗證以劑量偏差3%和3 mm距離偏差為控製標準,通過率均在90%以上.結論調彊計劃膠片劑量驗證方法可以保證調彊放療計劃的安全執行.
목적개소화탐토조강방사치료적효편제량험증방법,건립조강방사치료적제량험증체계.방법통과체모이식적방법분별용전리실재수모체중측량IMRT치료계화모점적절대제량,이용효편험증비교TPS수출제량도여실제폭출적제량도진행비교분석역향계화계통제량계산적준학성.결과소유환자적조강계화험증결과중등중심점제량오차균재4%이내;상대제량적험증이제량편차3%화3 mm거리편차위공제표준,통과솔균재90%이상.결론조강계화효편제량험증방법가이보증조강방료계화적안전집행.
Objective to introduce and discuss the IMRT dose verification method of film, establishment of IMRT dose verification system. Methods the phantom transplantation methods respectively by the ionization chamber in a water phantom for measuring IMRT treatment plan for absolute dose at a certain point, using film was validated by comparing the TPS output dose map and actual burst dose map comparative analysis of inverse planning system the accuracy of dose calculation. Results all patients with IMRT plan to validate the results of secondary center point dose errors are less than 4%;relative dose verification with a dose of deviation between 3%and 3 mm distance deviation control standard, passing in 90%. Conclusion IMRT plan film dosimetry verification method can guarantee the safe implementation of intensity-modulated radiotherapy planning.