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. Author manuscript; available in PMC: 2015 Mar 15.
Published in final edited form as: Radiographics. 2014 Jan-Feb;34(1):217–233. doi: 10.1148/rg.341135130

Figure 13.

Figure 13

Fat-water swapping in a patient with total knee replacement. Iterative decomposition of water and fat with echo asymmetry and least-squares estimation (IDEAL; GE, Milwaukee, Wis) MR images (TR, 3000 msec; TE, 13 msec) with fat (a) and water (b) only show severe field heterogeneity and fat-water swapping.