1. Magnetic resonance imaging of liver tumors
Riccardo Lencioni, Dania Cioni, Laura Crocetti, Clotilde Della Pina, Carlo Bartolozzi 
Journal of Hepatology 
Volume 40, Issue 1, Pages (January 2004)
DOI: /S (03)

2. Fig. 1
Hepatic hemangioma. The lesion is hypointense on the T1-weighted image (a); and markedly hyperintense on the T2-weighted image (b). After administration of an extracellular fluid space contrast agent, peripheral nodular enhancement is detected in the arterial phase of the dynamic study (c), progressing centripetally to almost complete hyperintensity in the delayed phase (d).
Journal of Hepatology  , DOI: ( /S (03) )

3. Fig. 2
Focal nodular hyperplasia. The lesion is isointense with respect to liver parenchyma on both the T1-weighted (a); and the T2-weighted image (b). The central scar is hypointense on the T1-weighted image (a); and hyperintense on the T2-weighted image (b). After administration of a gadolinium chelate, the lesion shows clear-cut enhancement in the arterial phase of the dynamic study, sparing the central scar (c). In the portal venous phase, the lesion becomes isointense to liver (d).
Journal of Hepatology  , DOI: ( /S (03) )

4. Fig. 3
Focal nodular hyperplasia. The small lesion, that was undetectable on baseline MRI, shows positive enhancement after administration of the hepatobiliary contrast agent MnDPDP. The central scar, that fails to take up the liver-specific agent, is well delineated.
Journal of Hepatology  , DOI: ( /S (03) )

5. Fig. 4
Hepatocellular carcinoma. The small lesion is undetectable on the T1-weighted image (a). After administration of an extracellular fluid space contrast agent, the nodule shows clear-cut enhancement in the arterial phase of the dynamic study (b), with rapid wash-out in the portal venous phase (c).
Journal of Hepatology  , DOI: ( /S (03) )

6. Fig. 5
Hepatocellular carcinoma. Baseline T1-weighted image hardly shows slightly hypointense tumor in segment 3 (a). In the arterial phase image of the dynamic study performed after bolus injection of the superparamagnetic iron oxide agent SH U 555 A, tumor is hyperintense because of its hypervascularity (b). T2-weighted image in the liver-specific phase of the RES-targeted agent clearly delineates the lesion owing to its hyperintensity compared with the blackened liver (c).
Journal of Hepatology  , DOI: ( /S (03) )

7. Fig. 6
Colorectal liver metastases. Baseline T1-weighted image shows solitary lesion in segment 7 (a). After administration of the hepatobiliary contrast agent MnDPDP, lesion conspicuity is increased, and an additional tiny lesion, undetectable on baseline scans, is detected in segment 2 (b).
Journal of Hepatology  , DOI: ( /S (03) )