Research Article

Full-Range Liver Fat Fraction Estimation in Magnitude MRI Using a Signal Shape Descriptor

Figure 2

Shape particularities in geometric distribution of signal as fat fraction varies. Case I (a) describes how distance changes for IP-OP echoes as fat fraction increases. Case II (b) shows a change in the concavity of OP points as fat becomes dominant. Case III (c) shows a swap in the position of latter echoes as PDFF increases around 90 to 100%. Case IV makes the change in overall decay caused by parameter explicit.

(a) Case I
(b) Case II
(c) Case III
(d) Case IV