Figure 7b. Global parenchymal injury. (a) Transverse US image of the liver obtained in a 60-year-old woman following a motor vehicle accident reveals heterogeneous hepatic parenchyma involving the entire right lobe. Normal vascular structures cannot be identified. (b) Longitudinal US image of the spleen obtained in a 45-year-old man following a motor vehicle accident shows diffuse involvement with areas of both increased and decreased echogenicity. The contour of the spleen is irregular and poorly demarcated.