Single Quadrature Echo Water-Fat Separation with Robust Phase Correction
Yu H, Brau A, Pelc N, Brittain J, Reeder S, McKenzie C, Shimakawa A
Three-point IDEAL (Iterative Decomposition of water and fat with Echo Asymmetry and Least-squares estimation) water-fat decomposition method offers robust separation, however, triples the scan time. To accelerate IDEAL, a reduced sampling scheme is proposed. The new approach acquires one full-resolution echo with water and fat quadrature encoded (separated by &[pi]/2). Two additional echoes are acquired in low-resolution. Robust water-fat separation is achieved with correction for the phase map calculated from the low-resolution images. The scan time is close to a single acquisition. Uniform water-fat separation was obtained in breathheld abdominal imaging and breast imaging, demonstrating its value in time-sensitive applications.