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.
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.
Authors: Paola Erra; Marta Puglia; Alfonso Ragozzino; Simone Maurea; Raffaele Liuzzi; Giuseppe Sabino; Luigi Barbuto; Alberto Cuocolo; Massimo Imbriaco Journal: Radiol Med Date: 2015-04-22 Impact factor: 3.469
Authors: T F Greten; N P Malek; S Schmidt; J Arends; P Bartenstein; W Bechstein; T Bernatik; M Bitzer; A Chavan; M Dollinger; D Domagk; O Drognitz; M Düx; S Farkas; G Folprecht; P Galle; M Geißler; G Gerken; D Habermehl; T Helmberger; K Herfarth; R T Hoffmann; M Holtmann; P Huppert; T Jakobs; M Keller; J Klempnauer; F Kolligs; J Körber; H Lang; F Lehner; F Lordick; A Lubienski; M P Manns; A Mahnken; M Möhler; C Mönch; P Neuhaus; C Niederau; M Ocker; G Otto; P Pereira; G Pott; J Riemer; K Ringe; U Ritterbusch; E Rummeny; P Schirmacher; H J Schlitt; K Schlottmann; V Schmitz; A Schuler; H Schulze-Bergkamen; D von Schweinitz; D Seehofer; H Sitter; C P Straßburg; C Stroszczynski; D Strobel; A Tannapfel; J Trojan; I van Thiel; A Vogel; F Wacker; H Wedemeyer; H Wege; A Weinmann; C Wittekind; B Wörmann; C J Zech Journal: Z Gastroenterol Date: 2013-11-15 Impact factor: 2.000