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. Author manuscript; available in PMC: 2016 Jul 1.
Published in final edited form as: Clin Gastroenterol Hepatol. 2014 Dec 3;13(7):1337–1345.e6. doi: 10.1016/j.cgh.2014.11.027

Figure 2. QUS backscatter coefficient (BSC) images with corresponding MRI-PDFF liver segmentation maps.

Figure 2

Figure 2

After a B-mode sonogram is formed and an image of liver tissue is created, a field of interest (FOI) is manually selected within a relatively homogenous portion of liver free of vasculature (a). This large FOI is further subdivided into many sub-ROIs for which attenuation-compensated BSC is estimated (b), and the overall BSC in the overall FOI is calculated by averaging the BSC of sub-ROIs therein. The qualitative color maps (b) for each patient represent the spectrum of BSC within each large FOI.