US 12,411,196 B2
Method for reconstructing QSM MAP using dipole compensation
Sooyeon Ji, Seoul (KR); Hyeonggeol Shin, Seoul (KR); and Jongho Lee, Seoul (KR)
Assigned to SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Seoul (KR)
Filed by SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Seoul (KR)
Filed on Jun. 6, 2023, as Appl. No. 18/329,883.
Claims priority of application No. 10-2022-0184584 (KR), filed on Dec. 26, 2022.
Prior Publication US 2024/0210506 A1, Jun. 27, 2024
Int. Cl. G01R 33/56 (2006.01); G01R 33/58 (2006.01)
CPC G01R 33/5608 (2013.01) [G01R 33/58 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of generating a QSM map comprising:
acquiring, by an MRI system, an image having a second resolution by scanning an object using an MRI scanner;
generating, by the MRI system, a plurality of sub-images having a first resolution from the image;
generating, by the MRI system, a plurality of QSM sub-maps having the first resolution from the plurality of sub-images using an inference network;
generating, by the MRI system, one QSM assembled map having the second resolution by assembling the plurality of QSM sub-maps with each other, and
generating, by the MRI system, a QSM map having the second resolution by calibrating the one QSM assembled map,
wherein,
the calibration is performed based on a difference between a second dipole kernel represented by the second resolution and a third dipole kernel represented by the second resolution, and
the third dipole kernel is obtained by performing sampling conversion on a first dipole kernel represented by the first resolution so that the first dipole kernel is represented by the second resolution.