US 12,223,567 B2
MR imaging method and apparatus and computer-readable storage medium
Yan Tu Huang, Shenzhen (CN); and Fang Dong, Shenzhen (CN)
Assigned to Siemens Healthineers AG, Erlangen (DE)
Filed by Siemens Healthcare GmbH, Erlangen (DE)
Filed on Sep. 30, 2022, as Appl. No. 17/956,964.
Claims priority of application No. 202111160101.1 (CN), filed on Sep. 30, 2021.
Prior Publication US 2023/0112929 A1, Apr. 13, 2023
Int. Cl. G06T 11/00 (2006.01); G01R 33/48 (2006.01); G01R 33/483 (2006.01); G01R 33/565 (2006.01); G01R 33/567 (2006.01); G06T 7/30 (2017.01)
CPC G06T 11/005 (2013.01) [G01R 33/4818 (2013.01); G01R 33/4826 (2013.01); G01R 33/56509 (2013.01); G01R 33/5673 (2013.01); G06T 7/30 (2017.01); G01R 33/4835 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A magnetic resonance (MR) imaging method, comprising:
collecting MR signal data every set time interval according to a stack-of-stars scheme or stack-of-spirals scheme, wherein in each time interval, MR signal data of each of a plurality of parallel slices arranged adjacently along a slice direction is collected as a radially-filled k-space slice or a spirally-filled k-space slice, and the radially-filled k-space slices or the or spirally-filled k-space slices of the plurality of parallel slices are stacked into a k-space column along the slice direction;
in a process of collecting the MR signal data, performing motion detection by utilizing a pilot tone signal received by a plurality of coils, and marking MR signal data collected during a body motion as motion damage data when the body motion is detected; and
performing motion correction on MR signal data after the motion damage data for k-space columns successively collected in a plurality of the time intervals, and obtaining a current MR image based on MR signal data obtained after the motion correction and MR signal data before the motion damage data,
wherein the performing motion correction on MR signal data after the motion damage data for k-space columns successively collected in a plurality of the time intervals, and obtaining current MR image based on MR signal data obtained after the motion correction and MR signal data before the motion damage data comprises:
taking a k-space column with motion damage data from the k-space columns successively collected in a plurality of the time intervals as a lossy k-space column, wherein a number of lossy k-space columns is 1;
calculating a correction parameter by utilizing reconstructed images of adjacent lossless k-space columns before and after the lossy k-space column, and performing correction on a reconstructed image of each lossless k-space column after the lossy k-space column by utilizing the calculated correction parameter, to obtain a corrected reconstructed image; and
superimposing the corrected reconstructed image and a reconstructed image of each lossless k-space column before the lossy k-space column to obtain the current MR image.