The Use of PET-CT in the Assessment of Patients with Colorectal Carcinoma
Figure 6
Liver metastatic deposit in a fatty liver that is difficult to appreciate on CT. (a) There is diffuse fatty infiltration of the liver on unenhanced CT with attenuation values in the liver far lower than those of the spleen. (b) There is a very subtle lesion (arrow) in segment 7 on contrast-enhanced CT imaging. (c) There is avid radiotracer uptake (arrow) in the right lobe of liver FDG-PET. (d) Increased uptake on FDG-PET (arrow) correlates with the subtle liver lesion on fused PET-CT consistent with a hepatic metastasis.
