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Gadoxetic acid-enhanced MRI findings of early hepatocellular carcinoma as defined by new histologic criteria

Title
 Gadoxetic acid-enhanced MRI findings of early hepatocellular carcinoma as defined by new histologic criteria 
Authors
 Hyungjin Rhee ; Myeong-Jin Kim ; Kyung-Sik Kim ; Jin-Sub Choi ; Young Nyun Park 
Issue Date
2012
Journal Title
 Journal of Magnetic Resonance Imaging 
ISSN
 1053-1807 
Citation
 Journal of Magnetic Resonance Imaging, Vol.35(2) : 393~398, 2012 
Abstract
PURPOSE: To describe the imaging features of early hepatocellular carcinoma (HCC) on gadoxetic acid-enhanced MRI (Gd-EOB-MRI) in comparison with multidetector computed tomography (MDCT) examinations. MATERIALS AND METHODS: We analyzed imaging findings of 19 pathologically proven early HCC lesions in 15 patients who underwent both MDCT and Gd-EOB-MRI at 3.0 Tesla (T) units before surgery. MRI included in-phase and out-of-phase T1-weighted dual-echo gradient-recalled-echo sequences, dynamic T1-weighted images before and after bolus injection of gadoxetic acid disodium, fat-saturated T2-weighted fast spin-echo sequences, and T1-weighted hepatobiliary phase images 20 min after contrast injection. Two radiologists retrospectively evaluated the signal intensities and enhancement features on MRI and MDCT. RESULTS: None of the lesions displayed arterial enhancement and washout on MDCT. On Gd-EOB-MRI, six (32%) lesions showed T2-hyperintensity, five (26%) lesions showed signal drop on opposed-phase. Three lesions (16%) showed arterial enhancement and washout. Twelve (63%), 13 (68%), and 15 (79%) lesions were hypointense on hepatic venous, equilibrium, and hepatobiliary phase, respectively. CONCLUSION: Most early HCCs did not show arterial enhancement and washout pattern on both MDCT and Gd-EOB-MRI. Gd-EOB-MRI may provide several ancillary findings for diagnosis of early HCC such as decreased hepatobiliary uptake, T2 hyperintensity and signal drop in opposed phase.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/90942
DOI
10.1002/jmri.22828
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Surgery
1. 연구논문 > 1. College of Medicine > Dept. of Radiology
1. 연구논문 > 1. College of Medicine > Dept. of Pathology
Yonsei Authors
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Link
 http://onlinelibrary.wiley.com/doi/10.1002/jmri.22828/abstract
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