3D Gradient Echo MRE of the Liver with CLEAR Parallel Image Reconstruction

Clinical 2D GRE Elastography is acquired and processed as 2D data sets. Commonly, four slices of stiffness estimates can be obtained in four breath-holds. A true 3D wave field sample with 3D processing would provide a more accurate estimate of the tissue stiffness. The proposed 3D GRE sequence can provide similar slice throughput with four to six 3D processed images obtained in four breath-holds. Due to the nature of the acquisition, the GRE scans provide fewer artifacts compared to similar EPI scans. The CLEAR reconstruction algorithm is used to provide superior ghost reduction compared to ASSET while providing additional acceleration.

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