Miyabe Yuki
Department of Radiation Oncology and Image-Applied Therapy, Kyoto University Hospital.
Igaku Butsuri. 2019;39(1):20-23. doi: 10.11323/jjmp.39.1_20.
Deformable image registration (DIR) can be used for accurate dose mapping between multiple radiotherapy image set. Dose accumulation based on DIR is playing an important role in advanced radiation therapy, such as 4 dimensional radiation therapy and adaptive Radiotherapy. The accuracy of dose mapping depends on the accuracy of the deformation vector fields arising from DIR and on the local dose gradient in the irradiated geometry. Therefore, in clinical use, patient-specific verification should be performed. In this article, challenges and points to notice on DIR based dose accumulation are overviewed and discussed briefly.
可变形图像配准（DIR）可用于多个放射治疗图像集之间的精确剂量映射。基于DIR的剂量累积在先进的放射治疗中发挥着重要作用，如四维放射治疗和自适应放射治疗。剂量映射的准确性取决于DIR产生的变形矢量场的准确性以及受照几何体中的局部剂量梯度。因此，在临床应用中，应进行针对患者的验证。本文对基于DIR的剂量累积的挑战和注意事项进行了概述并简要讨论。
