Smart Combination: A Technique for Reducing Cardiac Motion Induced Signal Loss in Diffusion-Weighted Liver Imaging

Zhiqiang Li¹, Zhenghui Zhang¹, Gaohong Wu¹, Xiaoli Zhao¹

One issue with single-shot diffusion-weighted EPI image of the liver is the signal loss in regions proximal to the heart due to cardiac motion. Various techniques in both data acquisition and post-processing have been proposed to mitigate this issue. In this work we present a new post-processing strategy to reduce the signal loss by combining the individual diffusion-weighted images with appropriate weights. In-vivo results demonstrated the feasibility.