Research on focal nodular hyperplasia with MSCT and postprocessing

Figure 1 A patient with FNH on the left hepatic lobe. A: Hypodensity of the lesion with lower density of the central asteroid scar; B: High enhancement with a thickened blood-supplying artery detected in the arterial phase; C: Normal density of the lesion and lower density of the central scar in the parenchymatous phase; D: Normal density of the lesion and slightly higher density of the central scar in the delayed phase.

Figure 2 A FNH lesion located on the hepatic right posterior lobe was evenly highly enhanced except for the central asteroid scar in the arterial and parenchymatous phases (A), the scar being reduced in size in the delayed phase (B).

Figure 3 A patient with FNH (hepatic right posterior lobe) accompanied by hemangiomas (left medial lobe). In the arterial phase a border nodular enhancement can be seen in the hemangiomas but even enhancement was demonstrated in FNH except for the central scar.

Figure 4 An arrow shows the ring-like enhancement mimicking a false involucrum.

Figure 5 Imaging with use of MSCT postprocessing technology. A: A thickened blood-supplying artery was demonstrated in the FNH lesion on maximum intensity projection, and was centrifugal type with radiating blood supply within the lesion; B: Another case of FNH, the volume rendering technique showed the artery following a gentle line gradually entering into the body of the lesion.