Keywords: Liver, Liver, Liver Diffusion Acquisition & Reconstruction
Motivation: Diffusion-weighted PROPELLER-EPI (periodically rotated overlapping parallel lines with enhanced reconstruction using EPI as signal readout) can enable high-fidelity free-breathing liver DWI.
Goal(s): It is challenging to acquire liver DW-PROPELLER-EPI with breath hold for improving the acquisition efficiency.
Approach: In this study, we proposed a self-referenced and collaborative PROPELLER-EPI reconstruction based on POCSMUSE (SCOPUSE) framework that can 1) correct the Nyquist ghost phase errors, 2) minimize the streaking artifacts, and 3) enable breath hold for liver DWI.
Results: This method can accelerate the acquisition of DW-PROPELLER-EPI data and provide improved image quality compared with conventional PROPELLER-EPI reconstruction pipeline.
Impact: Breath-hold acquisition can reduce the respiratory artifact in liver DWI with high scan efficiency, however, the attainable image quality is often limited by the breath-hold time. The proposed SCOPUSE can enable breath-hold liver DW-PROPELLER-EPI acquisition for achieving high-fidelity liver DWI.
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