Fig. 1

Hepatic parenchymal change in US in post-Fontan patients. a A 33-year-old woman with previous pulmonary atresia. US reveals heterogeneous parenchymal echotexture with central zone hyper-echogenicity and peripheral zone hypo-echogenicity (arrows). b-d A 30-year-old woman with previous hypoplastic right ventricle syndrome. b US shows irregular homogeneous hyperechoic mass-like areas (arrowheads) surrounding portal vein branches with geographic margin. c, d In-phase and opposed-phase axial T1-weighted MRI demonstrates increased signal intensity (SI) on in-phase image (c) and dropped SI on opposed-phase image (d), suggesting fat deposit (dotted arrows). These areas correspond to the hyperechoic mass-like areas on US. e A 48-year-old woman with previous double outlet right ventricle. Contrast-enhanced ultrasound image obtained at 3 min shows marked coarse and heterogeneously weak delayed parenchymal enhancement