MR imaging during arterial-portography (MR-AP) in the detection of hepatic tumor: comparison with CT-AP.
This study was undertaken to compare the detection rate of hepatic space occupying lesion (SOL)s between computed tomography during arterial portography (CT-AP) and magnetic resonance imaging during arterial portography (MR-AP) and the differences in time intensity curve on MR-AP between HCC, metastatic tumor, FNH, and hemangioma. We performed CT-AP and MR-AP in 17 patients including 14 cases of HCC and one each of metastasis, FNH, and hemangioma. MR-AP was performed by Turbo-FLASH sequence. There was no statistically significant difference between CT-AP and MR-AP in detecting satellite lesions in terms of smallest diameter and number of flow defects (p > 0.05). Hemangioma showed rapid enhancement after the first pass and, consequently, the same enhancement as the hepatic parenchyma. MR-AP was comparable to CT-AP in the detection of hepatic SOLs. Hemangioma showed an enhancement pattern different from those of HCC, metastatic tumor, and FNH, which showed patterns similar to each other.
Kajiya
Y
Y
Department of Radiology, Faculty of Medicine, Kagoshima University, Sakuragaoka, Japan.
Nakajo
M
M
Miyazono
N
N
Kajiya
Y
Y
Fujiyoshi
F
F
Ichinari
N
N
D006528:Carcinoma, Hepatocellular / Q000175:diagnosis* / Q000000981:diagnostic imaging; D003287:Contrast Media / Q000008:administration & dosage; D006391:Hemangioma / Q000175:diagnosis / Q000000981:diagnostic imaging; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000556:secondary; D008279:Magnetic Resonance Imaging; D011168:Portal System / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed
D003287:Contrast Media