Fat composition in the liver, particularly the amount of polyunsaturated fat, may be important in characterizing NAFLD. Spatially resolved maps of unsaturation indices were generated using an accelerated free-breathing spin echo single point imaging technique. Multiple under-sampling patterns were acquired sequentially to ensure oversampling of the k-space centre even after retrospective motion correction. The technique was validated using a set of oil/water mixture phantoms and evaluated in an in vivo mouse study (N=8).
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