US 12,078,707 B2
Systems and methods of simultaneous multi-slice acquisition in magnetic resonance imaging
Sudhir Ramanna, Karnataka (IN); and Ramesh Venkatesan, Karnataka (IN)
Assigned to GE PRECISION HEALTHCARE LLC., Wauwatosa, WI (US)
Filed by GE PRECISION HEALTHCARE LLC, Wauwatosa, WI (US)
Filed on Apr. 8, 2022, as Appl. No. 17/716,672.
Prior Publication US 2023/0324488 A1, Oct. 12, 2023
Int. Cl. G01R 33/561 (2006.01); G01R 33/483 (2006.01); G06T 11/00 (2006.01)
CPC G01R 33/5617 (2013.01) [G01R 33/4835 (2013.01); G06T 11/006 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A magnetic resonance (MR) acquisition acceleration method, comprising:
for each acquisition of a plurality of acquisitions,
generating an excitation radio frequency (RF) pulse that excites a plurality of slices, wherein a number of slices in the plurality of slices is not a power of two, wherein generating the excitation RF pulse further comprises modulating a base excitation RF pulse with a different modulation function during each acquisition, generating the excitation RF pulse further comprising:
generating the modulation function for individual acquisitions by:
multiplying a Hadamard-like matrix with a modulation matrix, the modulation matrix having one row and a number of columns, wherein the number of columns is the same as the number of slices;
applying, to a subject by an MR system, the excitation RF pulse; and
acquiring MR signals of the plurality of slices,
wherein a number of acquisitions is equal to the number of slices, and MR signals from each acquisition are linear combinations of MR signals of individual slices in the plurality of slices;
reconstructing MR images of the individual slices based on the MR signals from the plurality of acquisitions; and
outputting the reconstructed MR images of the individual slices.