US 12,405,334 B1
System and method for multi-echo steady-state sequence with improved fat suppression using adapted Dixon technique
Yan Wen, New York, NY (US); Mei Kei Maggie Fung, Jersey City, NJ (US); Kang Wang, Sussex, WI (US); Ek Tsoon Tan, Westbury, NY (US); and Darryl Brett Sneag, Plainview, NY (US)
Assigned to GE Precision Healthcare LLC, Wauwatosa, WI (US); and NEW YORK SOCIETY FOR THE RELIEF OF THE RUPTURED AND CRIPPLED, MAINTAINING THE HOSPITAL FOR SPECIAL SURGERY, New York, NY (US)
Filed by GE Precision Healthcare LLC, Waukesha, WI (US); and NEW YORK SOCIETY FOR THE RELIEF OF THE RUPTURED AND CRIPPLED, MAINTAINING THE HO, New York, NY (US)
Filed on Apr. 8, 2024, as Appl. No. 18/629,545.
Int. Cl. G01R 33/56 (2006.01); G06T 7/00 (2017.01)
CPC G01R 33/5607 (2013.01) [G06T 7/0016 (2013.01); G06T 2207/10088 (2013.01); G06T 2207/20 (2013.01); G06T 2207/30016 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A computer-implemented method for suppressing fat in reconstructed magnetic resonance imaging data, comprising:
generating, via a processor, a first echo image and a second echo image from magnetic resonance scan data acquired of a subject with a magnetic resonance scanner utilizing a multi-echo steady state sequence;
estimating, via the processor, an echo phase difference between the first echo image and the second echo image to generate an echo phase difference image;
identifying, via the processor, voxels in the echo phase difference image having an extra chemical shift phase, wherein a region growing algorithm is utilized to identify the voxels having the extra chemical shift phase in the echo phase difference image; and
removing, via the processor, signals of the voxels identified having the extra chemical shift phase in both the first echo image and the second echo image to generate a first fat-removed image and a second fat-removed image, respectively.