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Abstract #3360

Phase-Error-Free Multi-shot 3D DWI using Filtered Back Projection Reconstruction

Hai Luo1, Gaojie Zhu1, Xiang Zhou1, Chao Wang1, Bei Lv1, Xia Liu1, and Ziyue Wu1,2

1AllTech Medical Systems, Chengdu, China, 2Alltech Medical System America, Solon, OH, United States

Conventional multi-shot DWI is known to suffer from inter-shot phase inconsistencies due to motion and hardware imperfections. In this work, we present a new approach for phase-error-free diffusion imaging by using multi-shot Paddlewheel-shaped EPI acquisition and filtered back projection (FBP) Reconstruction. The necessity of inter-shot phase correction is removed due to the magnitude-only nature of FBP. Reduced FOV excitation scheme is incorporated to reduce scan time and artifacts. Exemplary results of head and prostate DWI are demonstrated to show the efficacy of the proposed methods.

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