Medline ® Abstract for Reference 10
of 'Magnetic resonance imaging of the hepatobiliary tract'
Dynamic MR imaging and early-phase helical CT for detecting small intrahepatic metastases of hepatocellular carcinoma.
Oi H, Murakami T, Kim T, Matsushita M, Kishimoto H, Nakamura H
AJR Am J Roentgenol. 1996;166(2):369.
OBJECTIVE: We performed a study to evaluate the sensitivities of multislice dynamic MR imaging and early-phase helical CT as noninvasive methods for detecting small intrahepatic metastases of hepatocellular carcinomas.
MATERIALS AND METHODS: Dynamic and spin-echo MR imaging and early- and delayed-phase helical CT of the liver were performed for patients with multiple hepatocellular carcinomas before transcatheter arterial chemoembolization. Forty-nine patients had 242 intrahepatic metastases less than 3 cm in diameter. Using iodized-oil CT after transcatheter arterial chemoembolization as a gold standard, the sensitivity of MR imaging for detecting intrahepatic metastases was compared with that of CT.
RESULTS: Of the 242 nodules, 225 were diagnosed as hepatocellular carcinomas by iodized-oil CT. Of these, dynamic MR imaging and early-phase CT were significantly superior to those of spin-echo MR imaging (p<.0001) and delayed phase CT (p<.0001) for tumors less than 1 cm in diameter.
CONCLUSION: Dynamic MR imaging and early-phase CT of the liver are the most sensitive noninvasive means of detecting small intrahepatic metastases of hepatocellular carcinoma before and after treatment.
Department of Radiology, NTT Osaka Teishin Hospital, Japan.