Axial MRI in a 57-year-old female participant with a high likelihood of
advanced fibrosis according to the fibrosis based on four factors
(FIB-4) index. (A) Left to right: Elastogram, magnitude,
and wave images obtained at three-dimensional MR elastography (MRE) show
the region of interest (dotted outline) in a region of parallel wave
propagation, avoiding the outer margin of the liver. (B)
Left to right: Elastogram, magnitude, and wave images obtained at
two-dimensional MRE show placement of the region of interest (dotted
outline) in the region of parallel wave propagation, avoiding the outer
edge of the liver. (C) MRI proton density fat fraction map
shows placement of regions of interest (green circles) within different
segments of the liver. Color bars alongside elastograms indicate a range
of kilopascals from low (purple) to high (red).