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Ring enhancement on T1-weighted GRE images after ferucarbotran administration for hepatic metastasis: comparison with pathological findings: case report.

Hepatic metastases are generally known to be composed of three structures (central necrosis, viable tumor cells, and peritumoral changes such as edema or congestion). We experienced a case of hepatic metastasis that was examined with ferucarbotran-enhanced magnetic resonance (MR) imaging, dynamic MR imaging using Gd-DTPA, and CT during arterial portography (CTAP), and was confirmed pathologically. MR imaging of this case vividly described the three pathological structures of the hepatic metastasis.