公开(公告)号：US20240385274A1

公开(公告)日：2024-11-21

申请号：US18318489

申请日：2023-05-16

Applicant: GE Precision Healthcare LLC

Inventor： Nitin Jain ,  Ashok Kumar P Reddy ,  Rajdeep Das ,  Sajith Rajamani ,  Rajagopalan Sundaresan ,  Harsh Kumar Agarwal ,  Ramesh Venkatesan

IPC: G01R33/58 ,  G01R33/56 ,  G01R33/561 ,  G01R33/563

Abstract: A method includes obtaining k-space data acquired by an MRI scanner from a single channel body coil utilizing a multi-shot EP-DWI pulse sequence and sampling the k-space data for a plurality of shots so that for each shot both a central k-space is fully sampled to form a central calibration region and an outer k-space is partially sampled by a factor equal to a number of shots. The method includes reconstructing an initial fully sampled k-space estimate for each shot utilizing both partial Fourier constant sampling and projection on convex sets reconstruction, wherein the plurality of shots is treated as a plurality of channels for filling in missing k-space for a respective shot. The method includes utilizing a low-rank regularization algorithm in an iterative manner to generate a reconstructed image for each shot, wherein the initial fully sampled k-space estimate for each shot is utilized as an initial guess.