Patent ID: 11948311
Assignee: THE GENERAL HOSPITAL CORPORATION
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC G

Claim 0:
1. A method for reconstructing an image with reduced motion artifacts from k-space data acquired with a magnetic resonance imaging (MRI) system, the method comprising:
(a) accessing k-space data with a computer system, the k-space data having been acquired from a subject using a magnetic resonance imaging (MRI) system, wherein the k-space data contain motion errors associated with motion of the subject;
(b) reconstructing a motion-corrupted image of the subject from the k-space data using the computer system;
(c) reconstructing a motion-corrected image of the subject from the k-space data using the computer system by:
inputting the motion-corrupted image to a trained neural network, generating output as a motion artifact image that depicts motion artifacts associated with the motion of the subject;
generating a difference image by subtracting the motion artifact image from the motion-corrupted image;
computing motion parameters that define one or more motion trajectories from the difference image and the k-space data; and
reconstructing the motion-corrected image of the subject by inputting the k-space data and the motion parameters to a model-based image reconstruction algorithm, generating output as the motion-corrected image.