Continuous real time 3D motion reproduction using dynamic MRI and precomputed 4DCT deformation fields.

ABSTRACT: Radiotherapy of mobile tumors requires specific imaging tools and models to reduce the impact of motion on the treatment. Online continuous nonionizing imaging has become possible with the recent development of magnetic resonance imaging devices combined with linear accelerators. This opens the way to new guided treatment methods based on the real-time tracking of anatomical motion. In such devices, 2D fast MR-images are well-suited to capture and predict the real-time motion of the tumor. To be used effectively in an adaptive radiotherapy, these MR images have to be combined with X-ray images such as CT, which are necessary to compute the irradiation dose deposition. We therefore developed a method combining both image modalities to track the motion on MR images and reproduce the tracked

SUBMITTER: Dasnoy-Sumell D 

PROVIDER: S-EPMC7484834 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature