CAJ | 학술논문

探讨碘帕醇在定位扫描中对放疗靶区及正常组织剂量分布的影响。方法通过对比分析0°、90°、180°、270°单野照射以及在以上4个角度共同照射时，对同一肝癌患者靶区及正常组织在用碘帕醇增强前后的剂量分布，并对靶区及正常组织体积、射野大小、等中心深度等影响放射剂量分布的因素作修正和对比分析。结果碘帕醇可以提升靶区剂量1%，降低正常组织的受量5%。结论碘帕醇作为一种CT增强剂在一定程度提升靶区剂量的同时可以适当降低正常组织的照射量。
탐토전파순재정위소묘중대방료파구급정상조직제량분포적영향。방법통과대비분석0°、90°、180°、270°단야조사이급재이상4개각도공동조사시，대동일간암환자파구급정상조직재용전파순증강전후적제량분포，병대파구급정상조직체적、사야대소、등중심심도등영향방사제량분포적인소작수정화대비분석。결과전파순가이제승파구제량1%，강저정상조직적수량5%。결론전파순작위일충CT증강제재일정정도제승파구제량적동시가이괄당강저정상조직적조사량。
Objective To investigate the effects of iopamidol positioning scan target and normal tissue to radiation dose distribution.Methods This paper comparative analysis the dose distribution between the target and normal tissue under single beam radiotherapy plan with the angle 0°, 90°, 180°, 270°and four beams radiotherapy plan with the angles 0°, 90°, 180°, 270°in liver cancer person beforeand after the use of iopamidol. At the same time we modify and analyze the factors which can do effect to the dose distribution,such as target volume, normal tissue volume,field size, isocenter depth and so on.Results Iopamidol can improve the dose of target by 1% and reduce the normal tissue’s radiation dose by 5%. Conclussion Iopamidol as a CT enhancement agent can reduce the normal tissue radiation dose when it improves the dose of target.