SIAECM - ABDOMINAL MR IMAGING: IMPORTANT CONSIDERATIONS FOR EVALUATION OF GADOLINIUM ENHANCEMENT DPT of Radiology NCU USA

ABDOMINAL MR IMAGING:
IMPORTANT CONSIDERATIONS FOR EVALUATION OF GADOLINIUM ENHANCEMENT Fig. 3
*Rafael O.P. de Campos MD*	*Vasco Herédia MD*	*Ersan Altun MD*	*Richard C. Semelka MD*
Department of Radiology University of North Carolina Hospitals Chapel Hill, NC 27599-7510 USA

Figure 3: A cirrhotic patient evaluated for possible HCC (a – c) and a patient evaluated for indeterminate liver mass (d – f). The hepatic arterial dominant phase (HADP) (a, d), early hepatic venous phase (EHVP) (b, e) and interstitial phase (c, f) were observed on transverse 3D-GE images acquired on 3.0 T. The first patient displayed a lesion (white arrow a - c) with central diffuse enhancement on HADP, with rapid washout and peripheral capsular enhancement developing on EHVP and interstitial phase (corresponding to a pseudocapsule). These MR imaging features are characteristic of HCC. Prominent varices are also observed (thin black arrow a – c). The second patient displayed three lesions (black arrows d – f) with discontinuous peripheral nodular enhancement on HADP and progressive centripetal enhancement on subsequent phases. These MR imaging features are characteristic of hemangioma. The greatest lesion occupies a large portion of left lobe and shows persistence of a central scar on interstitial phase imaging, consistent with a type 3 hemangioma.

Figure 2: Early subphases of enhancement

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Department of Radiology1 University of North Carolina Hospitals Chapel Hill, NC 27599-7510 USA

Corresponding author: Richard C. Semelka, M.D. Phone: (919) 966-9676 Fax: (919) 843-7147 E-mail : richsem@med.unc.edu -