title: Echo-Doppler measurements of portal vein and hepatic artery in asymptomatic patients with hepatitis B virus and healthy adults.
abstract: OBJECTIVE
  The aim of this prospective study was to determine the range of various hemodynamic parameters of portal vein and hepatic artery with echo-Doppler imaging in asymptomatic carriers of hepatitis B virus (HBV) and healthy adults.
  
  
  METHODS
  One hundred and twenty two healthy adults and fifty-three asymptomatic patients with chronic HBV formed two groups. All participants underwent color Doppler imaging of the portal vein and hepatic artery. A single operator performed all echo-Doppler measurements. The examination protocol included measurements of portal vein and hepatic artery diameter (d), blood flow (BF), time averaged velocity (TAV) and calculation of Doppler Perfusion Index (DPI) of liver.
  
  
  RESULTS
  Asymptomatic HBV carriers showed a statistically significant decrease in portal vein TAV (12.8 ± 6.1 vs 17.5 ± 8.8), an increase in portal vein BF (411.38 ± 211.31 vs 327.55 ± 188.77) and decrease in DPI (0.18 ± 0.14 vs 0.28 ± 0.15).
  
  
  CONCLUSIONS
  Echo-Doppler measurements of portal vein and hepatic artery can detect significant hemodynamic changes in asymptomatic HBV carriers.
authors.affiliation: Department of Radiology, University of Athens, Greece. xtziaf2003@yahoo.gr
authors.forename: Christina
authors.initials: C
authors.lastname: Tziafalia
authors.forename: Marianna
authors.initials: M
authors.lastname: Vlychou
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Tepetes
authors.forename: Nikolaos
authors.initials: N
authors.lastname: Kelekis
authors.forename: Ioannis V
authors.initials: IV
authors.lastname: Fezoulidis
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D058070:Asymptomatic Diseases; D001783:Blood Flow Velocity; D016022:Case-Control Studies; D005260:Female; D006115:Greece; D006439:Hemodynamics; D006499:Hepatic Artery / Q000000981:diagnostic imaging* / Q000503:physiopathology; D019694:Hepatitis B, Chronic / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D008102:Liver Circulation; D008297:Male; D008875:Middle Aged; D011169:Portal Vein / Q000000981:diagnostic imaging* / Q000503:physiopathology; D011446:Prospective Studies; D018608:Ultrasonography, Doppler; D055815:Young Adult