Savellano DH, Köstler H, Baus S, Mössinger M, Gratz KF, Weimann A, Galanski M. Assessment of Sequential Enhancement Patterns of Focal Nodular Hyperplasia and Hepatocellular Carcinoma on Mangafodipir Trisodium Enhanced MR Imaging.
Invest Radiol 2004;
39:305-12. [PMID:
15087726 DOI:
10.1097/01.rli.0000120372.55482.eb]
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Abstract
RATIONALE AND OBJECTIVES
Sequential contrast changes of mangafodipir trisodium (Mn-DPDP)-enhanced magnetic resonance imaging (MRI) were evaluated in the differentiation of focal nodular hyperplasias (FNH) and hepatocellular carcinomas (HCC).
METHODS
Patients with FNH (n = 16) or HCC (n = 12) underwent MRI: T2-weighted fast spin echo before and T1-weighted gradient echo before and 1, 4, 14, and 22 hours after 5 micromol/kg Mn-DPDP. Homogeneity of enhancement and delineation of fibrous scars of FNHs were assessed qualitatively. Lesion-to-liver contrast changes of FNHs and HCCs were compared quantitatively (Mann-Whitney U).
RESULTS
Mn-DPDP improved detection of characteristic scars of FNHs from 50% before to 90% after contrast agent. Apart from fibrous tissue enhancement of FNHs was mostly homogeneous (90%). Time-dependent contrast changes were up to 20 times higher (after 4 hours) for FNHs than HCCs (P < 0.0001).
CONCLUSIONS
Mn-DPDP-enhanced MRI helps to delineate characteristic morphologic features of FNHs and can provide quantitative data differentiating FNH and HCC.
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