US 12,394,117 B2
Medical image reconstruction method, computer device and storage medium
Hao Yan, Xi'an (CN); Shaojie Chang, Xi'an (CN); and Jinsheng Li, Xi'an (CN)
Assigned to OUR UNITED CORPORATION, Xi'an (CN)
Filed by OUR UNITED CORPORATION, Xi'an (CN)
Filed on Dec. 1, 2021, as Appl. No. 17/539,737.
Claims priority of application No. 202011389521.2 (CN), filed on Dec. 1, 2020.
Prior Publication US 2022/0172412 A1, Jun. 2, 2022
Int. Cl. G06T 11/00 (2006.01)
CPC G06T 11/006 (2013.01) [G06T 11/005 (2013.01); G06T 2210/41 (2013.01); G06T 2211/421 (2013.01); G06T 2211/424 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A medical image reconstruction method performed by a computer device, the computer device being communicatively connected to a medical imaging device, and the medical image reconstruction method comprising:
obtaining real projection data collected by the medical imaging device;
obtaining an inverse matrix corresponding to the medical imaging device that is physically stored in advance, wherein the inverse matrix is obtained by performing an inverse operation based on a system matrix corresponding to the medical imaging device, and the system matrix indicates a geometrical relationship between projection rays of the medical imaging device at each view angle and reconstructed image pixels; and
determining a reconstructed image of the real projection data according to the real projection data and the inverse matrix;
wherein the inverse matrix is a generalized inverse matrix, and performing the inverse operation based on the system matrix corresponding to the medical imaging device includes:
obtaining the system matrix corresponding to the medical imaging device; and
obtaining the generalized inverse matrix of the system matrix according to the system matrix, wherein obtaining the generalized inverse matrix of the system matrix according to the system matrix includes: performing singular value decomposition on the system matrix to obtain the generalized inverse matrix of the system matrix; and
the medical image reconstruction method further comprises:
storing the generalized inverse matrix of the system matrix in the computer device, wherein the generalized inverse matrix of the system matrix is compressed into a compressed matrix before being stored in the computer device.