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Abstract #4039

Small (≤ 2 Cm) Enhancing Lesions Seen Only During the Hepatic Arterial Phase: Evaluation with Gadobenate Dimeglumine (Gd-BOPTA) Enhanced MR Imaging During the Hepatobiliary Phase

Michele Di Martino1, Daniele Marin1, Antonino Guerrisi1, Gianmaria De Filippis1, Francesca Galati1, Carlo Catalano1, Roberto Passariello1

1Radiological Sciences, University of Rome "Sapienza", Rome, Italy

Typical Imaging findings for a confident and reliable diagnosis of HCC at MR imaging include: on T2-w images, typical HCC shows high signal intensity to the background liver; during the arterial phase, the lesion is generally hyperintense due to the dominant arterial supply. By converse, HCC becomes hypointense to the surrounding liver during the portal venous and equilibrium phases. However, a substantial number of small ( 2 cm) can only be detected as hypervascular foci during the arterial phase that is, unfortunately, a nonspecific finding.The hepatobiliary phase of Gd-BOPTA MR imaging enables accurate diagnosis of benign HAPE-only nodules and HAPE-only HCCs