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Abstract #4017

Investigation of A Fast-volumetric Four-dimensional Magnetic Resonance Imaging Technique for Abdominal Radiotherapy Tumor Motion Management

Tian Li1, Haonan Xiao1, Ge Ren1, Weiwei Liu2, Yibao Zhang2, Hao Wu2, Weihu Wang2, and Jing Cai1
1Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong, Hong Kong, 2Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Beijing Cancer Hospital & Institute, Peking University Cancer Hospital & Institute, Beijing, China, Beijing, China

Motion management plays an important role in abdominal cancer radiotherapy. Current motion measurement method using 2D Cine MRI is inefficient. However, there is no commercial four-dimensional MRI available for motion management. In this study, we aim to investigate a fast-volumetric four-dimensional MRI technique using commercial sequence for tumor motion management in liver cancer patient. Our preliminary results shown that the commercially available TWIST-VIBE 4D-MRI sequence is capable of measuring liver tumor motion accurately with an acceptable tumor contrast.

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Abstract