CAJ | 학술논문

目的：研究不同规格准直器对剂量分布和治疗时间的影响，为射波刀治疗计划设计中准直器的选择提供参考和指导。方法：分别使用12种规格的准直器对3个大小不同的肿瘤靶区进行计划设计，得出每个靶区在不同准直器下对应的剂量分布和治疗时间，并分析其存在的关系。结果：随着准直器尺寸的增加，治疗时间变得越来越少；当准直器尺寸远大于靶区时，剂量分布随准直器尺寸增加变得越好，但是正常组织受到的照射剂量越多。结论：在治疗计划设计中准直器尺寸的选择应比肿瘤尺寸略小，约占肿瘤直径的2/3，准直器的选择可为肿瘤治疗提供参考依据，并具有重要的指导意义。
목적：연구불동규격준직기대제량분포화치료시간적영향，위사파도치료계화설계중준직기적선택제공삼고화지도。방법：분별사용12충규격적준직기대3개대소불동적종류파구진행계화설계，득출매개파구재불동준직기하대응적제량분포화치료시간，병분석기존재적관계。결과：수착준직기척촌적증가，치료시간변득월래월소；당준직기척촌원대우파구시，제량분포수준직기척촌증가변득월호，단시정상조직수도적조사제량월다。결론：재치료계화설계중준직기척촌적선택응비종류척촌략소，약점종류직경적2/3，준직기적선택가위종류치료제공삼고의거，병구유중요적지도의의。
Objective:To study the effect of different sizes of collimators on dose distribution and treatment time, and provide the reference of selecting collimators for planning design. Methods:To design the planning by using collimators with 12 kinds of size for three different size tumors, and analysis the dose distribution and treatment time of planning with different collimators. Results:The treatment time is becoming less and less with increasing of the collimator size;the dose distribution becomes better and better when collimator size becomes large, but the dose of the normal tissue becomes more. Conclusion: The selection of collimator size may be smaller than tumor size by analyzing the results of three groups, and about 2/3 of tumor diameter, which provides important reference and guidance significance for designing the treatment planning with choosing collimators.