Richard Kijowski1, Michael Woods1, Kenneth Lee1, Kuya Takami1, Huanzhou Yu2, Ann Shimakawa2, Jean Brittain3, Scott Reeder1,4
1Radiology, University of Wisconsin, Madison, WI, USA; 2Applied Science Laboratory, GE Healthcare, Menlo Park, CA, USA; 3Applied Science Laboratory, GE Healthcare, Madison, WI, USA; 4Biomedical Engineering, University of Wisconsin, Madison, WI, USA
This study was performed to demonstrate improvements in the quality of fat suppression for fast spin-echo (FSE) imaging of the knee using multi-peak fat spectral modeling and IDEAL fat-water separation. T1-weighted and T2-weighted FSE sequences with single-peak and multi-peak IDEAL fat-water separation and 2 frequency-selected fat-saturation methods (fat-selective saturation and fat-selective partial inversion) were performed at 3.0T in 10 knees of 5 asymptomatic volunteers. Multi-peak IDEAL had significantly greater (p<0.05) suppression of signal of subcutaneous fat and bone marrow than fat-selective saturation, fat-selective partial inversion, and single-peak IDEAL for both T1-weighted and T2-weighted FSE sequences.