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Egyptian Journal of Radiology and Nuclear Medicine
Fig. 3 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 3

From: Comparison between subtraction and dynamic MRI in assessing treatment response following radiofrequency ablation in patients with hepatocellular carcinoma

Fig. 3

A 65-year-old male patient with liver cirrhosis underwent radiofrequency ablation of right hepatic lobe focal lesion. A Axial T1 pre-contrast image shows heterogeneous but mostly hyperintense focal lesion (open yellow arrow) with iso-intense portion (open red arrow). B Axial dynamic arterial phase shows hyperintense focal lesion which could be attributed to enhancement or residual disease (open yellow arrow) with suspected enhancing nodule seen at about 7 o’clock position (open red arrow). C Subtracted image shows conspicuous area of nodular enhancement, consistent with residual tumoral activity (open red arrow) with subtraction of the high signal seen in the arterial phase (open yellow arrow) therefore suggestive of coagulative necrosis rather than enhancement of residual disease

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