title: Pseudothrombosis in the portal venous system: a potential pitfall with gadolinium-enhanced dynamic gradient-recalled echo imaging of the liver.
abstract: Gadolinium-enhanced dynamic magnetic resonance (MR) images in 90 patients were reviewed to assess the artifacts mimicking portal venous thrombosis. The incidence of definite signal-intensity decrease mimicking pathologic condition was higher (P < 0.01) in the right (8%) and left (9%) portal vein branches and portal trunk (6%) than in the splenic (0%) or superior mesenteric (1%) vein with equilibrium-phase images. Radiologists should remember that dynamic MR images occasionally show signal-intensity decrease mimicking portal venous thrombosis due to flow artifact.
authors.affiliation: Department of Radiology, Gifu University School of Medicine, Gifu 500-8705, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Nishibori
authors.forename: M
authors.initials: M
authors.lastname: Kanematsu
authors.forename: H
authors.initials: H
authors.lastname: Kondo
authors.forename: M
authors.initials: M
authors.lastname: Matsuo
authors.forename: H
authors.initials: H
authors.lastname: Hoshi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016477:Artifacts; D016009:Chi-Square Distribution; D003287:Contrast Media / Q000032:analysis*; D003937:Diagnosis, Differential; D017352:Echo-Planar Imaging / Q000379:methods*; D005260:Female; D005682:Gadolinium; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D008099:Liver / Q000473:pathology; D008103:Liver Cirrhosis / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D011169:Portal Vein / Q000473:pathology*; D011336:Probability; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D018608:Ultrasonography, Doppler; D020246:Venous Thrombosis / Q000175:diagnosis* / Q000209:etiology
chemical_list: D003287:Contrast Media; D005682:Gadolinium