US 11,874,354 B2
Systems and methods for magnetic resonance imaging
Linfei Wen, Shanghai (CN); and Zhenhua Shen, Shanghai (CN)
Assigned to SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed by SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed on May 10, 2022, as Appl. No. 17/662,835.
Claims priority of application No. 202110524587.6 (CN), filed on May 13, 2021; and application No. 202110678025.7 (CN), filed on Jun. 18, 2021.
Prior Publication US 2022/0365159 A1, Nov. 17, 2022
Int. Cl. G01R 33/48 (2006.01); G01R 33/483 (2006.01); G01R 33/54 (2006.01)
CPC G01R 33/4835 (2013.01) [G01R 33/543 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for controlling magnetic resonance imaging (MRI), implemented on a machine having at least one processing device and at least one storage device, the method comprising:
for each slice of a plurality of slices of a subject to be scanned, determining a plurality of radiofrequency (RF) parameters, the plurality of RF parameters including at least one channel parameter corresponding to each of a plurality of channels, the at least one channel parameter corresponding to each of the plurality of channels including an excitation power of the channel for exciting the slice;
determining a slice group based at least in part on the RF parameters corresponding to the plurality of slices, the slice group including at least two slices selected from the plurality of slices, wherein the determining a slice group based at least in part on the RF parameters corresponding to the plurality of slices includes:
selecting a first slice to be excited from the plurality of slices;
for each of the plurality of channels, determining a power difference between a power threshold of the channel and the excitation power of the channel for exciting the first slice;
determining at least one first candidate slice based on the power difference corresponding to at least one of the plurality of channels; and
determining the slice group based on the first slice and the at least one first candidate slice; and
directing at least a portion of the plurality of channels to excite the slice group based on RF parameters corresponding to the slice group.