CAJ | 학술논문

目的：对调强放疗中的小野和小跳数在TPS计算与加速器实际测量值之间的差异进行研究，以指导调强放疗技术在临床中的应用。方法在TPS中设计小野和小跳数计划并导出，与在加速器上进行的实际测量结果进行比较。结果在小跳数测量中，2MU以上的通过率均＞83％；在小野测量中，面积大于2 cm ×2 cm的射野通过率均＞80％。结论对TPS计算的小野和小跳数需进行手动适当调整；MLC的到位精度对小野的影响比较大，MLC的质量控制不容忽视。
목적：대조강방료중적소야화소도수재TPS계산여가속기실제측량치지간적차이진행연구，이지도조강방료기술재림상중적응용。방법재TPS중설계소야화소도수계화병도출，여재가속기상진행적실제측량결과진행비교。결과재소도수측량중，2MU이상적통과솔균＞83％；재소야측량중，면적대우2 cm ×2 cm적사야통과솔균＞80％。결론대TPS계산적소야화소도수수진행수동괄당조정；MLC적도위정도대소야적영향비교대，MLC적질량공제불용홀시。
Objective To study the difference between the calculation of TPS and the measurement of small segment and small moni-tor unit in IMRT to instruct the clinical application.Methods The small segment and small monitor unit plan were created and exported in TPS,and compared with the results of measurement in LA.Results In small MU testing the passing rate of over 2MU was more than 83%;in small segment testing the passing rate of the area over 2cm ×2 cm was more than 80%.Conclusion Manual operation should be per-formed in the mall segment and small monitor unit calculated in TPS.MLC leaf positional accuracy is important for the small field,so QA/QC for MLC can not be ignored.