Research Article

Acoustic Radiation Force Impulse Elastography for Efficacy Evaluation after Hepatocellular Carcinoma Radiofrequency Ablation: A Comparative Study with Contrast-Enhanced Ultrasound

Figure 2

2D conventional US (a) and virtual touch tissue imaging (VTI, b). Tumor mass after RFA is remarkably darker (stiffer) than adjacent hepatic parenchyma on VTI. The ablated size of VTI (34.8 mm × 43.1 mm) is larger than that of 2D conventional US (27.1 mm × 38.7 mm).
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