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Fig. 12A —32-year-old man with multiple small liver nodules without
changes in 4 years. On color Doppler sonography, regenerative nodules can be
isoechoic or mildly hyperechoic with hypoechoic halo. Poor border definition
is also frequent finding. Most nodules show arterial vascularization (radial
and peripheral) at pulsed Doppler interrogation. Power Doppler sonogram shows
small isoechoic hypervascular nodule (arrows).
