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Abstract #3191

Iterative Decomposition of Water & Fat with Echo Asymmetry & Least-Squares Estimation (IDEAL) of the Wrist & Finger at 3TMRI: Comparison with Chemical Shift Selective Fat Suppression Images

Takatoshi Aoki1, Yoshiko Yamashita1, Hiroyuki Takahashi1, Yoshiko Hayashida1, Hodaka Oki1, Shigeru Hibino2, Atsushi Nozaki2, Kazuyoshi Saito3, Yoshiya Tanaka3, Yukunori Korogi1

1Department of Radiology, University of Occupational & Environmental Health School of Medicine, Kitakyushu, Fukuoka, Japan; 2GE Healthcare Japan; 3First department of Internal Medicine, University of Occupational and Environmental Health School of, Kitakyushu, Fukuoka, Japan

A main challenge of clinical musculoskeletal imaging with maintaining high SNR is uniform fat suppression in areas of B0 inhomogeneity. Our purpose is to compare IDEAL with chemical shift selective fat-suppressed T1-weighted spin-echo (FS-CHESS-T1-SE) images for MR imaging of the hand and finger at 3.0T MR system. Eight healthy volunteers and 8 rheumatoid arthritis patients were examined with both sequences. Image quality and lesion delineation was better on IDEAL than on FS-CHESS-T1-SE images. IDEAL compensates for the effects of field inhomogeneities, providing uniform fat suppression of the hand and finger than did FS-CHESS-T1-SE sequence.