Comparative results of the proposed method with R-NNLS considering FS data and accelerated scans. Four specimens of the bovine liver, microwaved with L60 = 60 s, L45 = 45 s, L30 = 30 s, and L15 = 15 s, are shown. A, B, Spatial maps for the long fraction obtained by FS + R-NNLS (no accel.) (A) and CS + R-NNLS (AF = 10) (B). C, D, Spatial maps for the long fraction obtained by the proposed method (no accel.) (C) and with acceleration (AF = 10) (D)