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Abstract #3517

eIRIS — An Eigen-Analysis Motivated Approach for More Robust Multi-Shot Diffusion-Weighted Imaging

Li Guo1, Zhongbiao Xu1, Yingjie Mei1,2, Wenxing Fang3, Chenguang Zhao3, Wufan Chen1, Yanqiu Feng1, and Feng Huang4

1Guangdong Provincial Key Laborary of Medical Image Processing, School of Biomedical Engineering, Southern Medical University, Guangzhou, People's Republic of China, 2Philips Healthcare, Guangzhou, People's Republic of China, 3Philips Healthcare (Suzhou), Suzhou, People's Republic of China, 4Neusoft Medical System, Shanghai, People's Republic of China

IRIS corrects the motion-induced inter-shot phase errors for multi-shot diffusion-weighted imaging by extracting the phase information from an additional navigator data, which may cause the distortion mismatch between the image and navigator data. To solve the distortion mismatch issue in IRIS without using B0 field map, we propose to extract the coil sensitivities and phase information from navigator data by using an eigen-analysis scheme. The performance of the proposed method is demonstrated in both phantom and in vivo data sets.

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