FIG. 10.

PCLR v.s. LR. The simulation data for image reconstruction are generated from the ground truth using 4-fold k-space undrsampling strategy (Fig. 1). In LR no phase information was used, while in PCLR the estimated phase using the acquired central k-space was utilized as the phase constraint. Due to the phase inconsistency, LR failed to utilize the image similarity across the DW dimension. In contrast, through the phase constraint to compensate the phase inconsistency, the image similarity across the DW dimension was recovered, and therefore the image quality was significantly improved by PCLR.