title: Hepatic artery resistance changes in portal vein thrombosis.
abstract: OBJECTIVE
  To determine if portal vein thrombosis (PVT) is associated with changes in the hepatic artery resistive index (RI) at Doppler ultrasonography (US).
  
  
  METHODS
  In 35 patients with findings suspicious for PVT, prospective hepatic artery RIs were obtained before angiographic proof of portal vein status. RIs were also obtained from 27 age-matched patients with liver disease (without PVT) and from eight patients with PVT (without occlusion).
  
  
  RESULTS
  Twenty-seven of the 35 patients had proved PVT and a significantly lower (P < .01) mean hepatic artery RI than did patients in any other group studied. Twelve of these 27 patients had RI values of .50 or less, while none of the patients in any other group studied had an RI value this low (specificity, 100%).
  
  
  CONCLUSIONS
  A reduction in hepatic artery RI accompanies PVT and may be a helpful secondary sign to determine this venous abnormality.
authors.affiliation: Department of Radiology, University of Michigan Hospital, Ann Arbor 48109-0030, USA.
authors.forename: J F
authors.initials: JF
authors.lastname: Platt
authors.forename: J M
authors.initials: JM
authors.lastname: Rubin
authors.forename: J H
authors.initials: JH
authors.lastname: Ellis
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D005260:Female; D006499:Hepatic Artery / Q000000981:diagnostic imaging / Q000503:physiopathology*; D006801:Humans; D016031:Liver Transplantation / Q000009:adverse effects; D008297:Male; D008875:Middle Aged; D011169:Portal Vein / Q000000981:diagnostic imaging; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D013927:Thrombosis / Q000209:etiology / Q000503:physiopathology*; D018608:Ultrasonography, Doppler; D014655:Vascular Resistance