title: Hepatic cavernous hemangiomas: patterns of contrast enhancement on MR fluoroscopy imaging.
abstract: OBJECTIVE
  The purpose of this study was to assess the patterns of contrast enhancement of hepatic hemangiomas on gadolinium-enhanced MR fluoroscopy imaging prospectively.
  
  
  METHODS
  Investigation was performed on a 0.3-T open MR unit. Gadolinium-enhanced MR fluoroscopy images were obtained in 24 patients with 28 hepatic hemangiomas. Each MR fluoroscopy image was obtained in 2 s and MR fluoroscopy lasted for 10-25 min for each investigation.
  
  
  RESULTS
  Three patterns of contrast enhancement were observed in 24 patients on MR fluoroscopy images. Four small lesions were not detected on MR fluoroscopy images. Uniform enhancement was seen in nine lesions (29%), peripheral nodular enhancement progressing centripetally to uniform enhancement was seen in nine lesions (29%), and peripheral nodular enhancement with persistent central hypointensity was seen in six lesions (22%).
  
  
  CONCLUSIONS
  Enhanced MR fluoroscopy technique could obtain dynamic images of hepatic hemangiomas. It can be suggested as a useful technique for the showing of enhancement of hepatic hemangiomas, keeping in mind its low sensitivity in the diagnosis of small hemangiomas.
authors.affiliation: Department of Radiology, Yüzüncü Yil University Faculty of Medicine, 65200 Van, Turkey. ozkan_unal@hotmail.com
authors.forename: Ozkan
authors.initials: O
authors.lastname: Unal
authors.forename: M Emin
authors.initials: ME
authors.lastname: Sakarya
authors.forename: Halil
authors.initials: H
authors.lastname: Arslan
authors.forename: Iyas
authors.initials: I
authors.lastname: Tuncer
authors.forename: Omer
authors.initials: O
authors.lastname: Etlik
mesh_terms: D000328:Adult; D000368:Aged; D003287:Contrast Media; D005260:Female; D005471:Fluoroscopy; D006392:Hemangioma, Cavernous / Q000175:diagnosis*; D006801:Humans; D007089:Image Enhancement; D008113:Liver Neoplasms / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity
chemical_list: D003287:Contrast Media