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Abstract #4444

POCS-ICE: POCS based Inherent Correction of phase Errors for multi-shot spiral DWI

Xiaodong Ma 1 , Feng Huang 2 , Zhe Zhang 1 , Bida Zhang 2 , Sheng Fang 3 , and Hua Guo 1

1 Center for Biomedical Imaging Research, Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, Beijing, China, 2 Philips Research China, Beijing, China, 3 Institute of nuclear and new energy technology, Tsinghua University, Beijing, China

POCS based Inherent Correction of motion-induced phase Errors (POCS-ICE) is proposed for the reconstruction in multi-shot spiral DWI, which can automatically correct the phase variation among different excitations without calculating them directly. Invivo experiments show that DW images from POCS-ICE present higher SNR and less aliasing artifacts than SENSE+CG when a large shot number is used. Therefore, it can contribute to shortening the spiral readout duration such that high resolution diffusion weighted images can be achieved.

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