Figure 8.
A 28-year-old man with a 0.7 cm × 0.6 cm solid thyroid nodule in the right lobe of his thyroid was confirmed as papillary carcinoma via postoperative pathological results. ROI was selected in the reference area (yellow lines) and analysis area (green lines). Arrowheads indicate nodule margins. (A) Conventional US image; (B) CEUS image; (C) dynamic perfusion curves; (D) histopathologic image (hematoxylin-eosin staining, ×40). ROI, region of interest; US, ultrasound; CEUS, contrast-enhanced ultrasound.