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Figure 2. 57-year-old man with liver metastases of hypernephroma. Before radiofrequency ablation (RFA) treatment, hepatic transit time (HTT) was 6 s. 1 month after RFA HTT increased up to 12 s while contrast-enhanced ultrasound and MRI show complete ablation. (a) Conventional ultrasound before RFA showing one liver nodule (arrow), diameter 2.4 cm. (b) MRI T1 weighted image showing the same tumour (arrow). (c) Contrast-enhanced ultrasound after RFA showing complete necrosis. (d) Contrast-enhanced MRI T1 weighted image showing the same area after RFA.
