Keywords: Prostate, Prostate
Motivation: Conventional single-shot EPI (ssh-EPI) is fast, but often causes geometric distortions, especially near the rectum.
Goal(s): In this research, a Dixon-msh-EPI technique is validated for prostate Diffusion-weighted Imaging (DWI).
Approach: Dixon-msh-EPI is proposed to reduce such distortions, while jointly separating water/fat components by a special structured low-rank reconstruction that also corrects shot-to-shot phase variations.
Results: Experiments were conducted on 7 healthy male volunteers using a 3T scanner comparing DW-ssh-EPI and Dixon-msh-EPI performance. The Dixon-msh showed significantly reduced geometric distortion and effective fat signal suppression, as scored by two readers. While both methods provided comparable image quality, Dixon-msh-EPI demonstrated improved motion-correction and geometric accuracy.
Impact: Dixon-msh-EPI offers improved prostate DWI by significantly reducing geometric distortions and enhancing across b-value registration. This technique could lead to more accurate diagnoses and has the potential to refine clinical MRI protocols, emphasizing precision in prostate diffusion imaging.
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