Fig. 4From: Superb microvascular imaging (SMI) compared with conventional ultrasound for evaluating thyroid nodulesA papillary thyroid carcinoma (➔) and an adenoma (⇑) coexist in the right lobe. a CDI and b PDI show peripheral vascularization and peripheral interrupted vascularization of the nodule and internal microvascularization. c Color SMI and d monochrome SMI show more vascularization, in particular curved and ring peripheral vascularization surrounding the nodule as well as internal microvascularization with small branching details. e Pulsed Doppler (guided by monochrome SMI) established that the small branching microvasculature was real and measurable. f CEUS shows disordered heterogeneous hypoechoic enhancement with incomplete peripheral enhancement (➔) and ring enhancement around the nodule and homogeneous hyperechoic internal enhancement (⇑).Back to article page