US 12,482,150 B2
Magnetic resource imaging recovery method using score-based diffusion model and apparatus thereof
Jongchul Ye, Daejeon (KR); and Hyungjin Chung, Daejeon (KR)
Assigned to Korea Advanced Institute of Science and Technology, Daejeon (KR)
Filed by Korea Advanced Institute of Science and Technology, Daejeon (KR)
Filed on Nov. 11, 2022, as Appl. No. 18/054,794.
Claims priority of application No. 10-2021-0155585 (KR), filed on Nov. 12, 2021.
Prior Publication US 2023/0154069 A1, May 18, 2023
Int. Cl. G06T 11/00 (2006.01); G06T 5/70 (2024.01)
CPC G06T 11/006 (2013.01) [G06T 5/70 (2024.01); G06T 2207/20081 (2013.01); G06T 2207/20084 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A magnetic resonance imaging (MRI) recovery method using a score-based diffusion model, the MRI recovery method being performed by a computer device and comprising:
training a continuous time-dependent score function with denoising score matching; and
sampling data from a conditional distribution given measurements, leveraging the trained score function, and recovering an image,
wherein the recovering of the image includes:
solving an SDE using the trained score function; and
assigning data consistency by replacing the measurements with known values,
wherein the solving of the SDE and the assigning of the data consistency are iteratively performed,
wherein the solving of the SDE includes:
splitting the image into a real part and an imaginary part and iteratively applying a predictor step and a corrector step to each of the real part and the imaginary part.