Abstract #3959

Improved Fat Suppression Using Multi-Peak Reconstruction for IDEAL Chemical Shift Fat-Water Separation: Application with Fast Spin Echo Imaging

Richard Kijowski¹, Michael Woods¹, Kenneth Lee¹, Kuya Takami¹, Huanzhou Yu², Ann Shimakawa², Jean Brittain³, Scott Reeder^1,4

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.