title: The Doppler ultrasonographic evaluation of hemodynamic changes in hepatic vascular structures in patients with hepatosteatosis.
abstract: BACKGROUND
  The hemodynamic changes in hepatic vascular structures of hepatosteatosis patients were examined using Doppler ultrasonography.
  
  
  METHODS
  Ninety hepatosteatosis patients, classified as mild, moderate or severe, and 30 healthy volunteers were included in this 120-person study. The height, weight, liver size, blood lipids and blood liver function tests of the subjects were measured. Those values were compared in the patient and control groups. In the patient and control groups, color duplex Doppler ultrasonography was used to examine portal vein peak velocity, portal vein flow volume, hepatic artery resistive index (RI), hepatic artery pulsatility index (PI) and hepatic artery flow volume.
  
  
  RESULTS
  Similarly to the degree of hepatosteatosis, increases in body mass index, liver size, liver enzyme levels and blood lipid levels were statistically significant (p<0.05). While the difference in portal vein peak velocity in the hepatosteatosis and control groups was not statistically significant, there was an increasing reduction in the degree of steatosis (p>0.05). As the degree of hepatosteatosis increased, there was a reduction in hepatic artery flow volume, portal vein flow volume and total flow volume that was not statistically significant. In the mild hepatosteatosis group, hepatic artery RI and PI values were statistically significantly lower than in the other groups (p<0.05). In the severe hepatosteatosis group, although the hepatic artery RI and PI values were not statistically significant, there was a minimal increase compared to the other groups.
  
  
  CONCLUSIONS
  It is believed that those results were caused by a reduction in liver compliance and hepatic vascular compliance, in addition to resistance increase in vascular structures.
authors.affiliation: Department of Radiology, Bulent Ecevit University, School of Medicine, Zonguldak, Turkey.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Karasin
authors.affiliation: Department of Radiology, Bulent Ecevit University, School of Medicine, Zonguldak, Turkey.
authors.forename: Ozlem
authors.initials: O
authors.lastname: Tokgoz
authors.affiliation: Department of Radiology, Bulent Ecevit University, School of Medicine, Zonguldak, Turkey.
authors.forename: Ismail
authors.initials: I
authors.lastname: Serifoglu
authors.affiliation: Department of Radiology, Bulent Ecevit University, School of Medicine, Zonguldak, Turkey.
authors.forename: Ilker
authors.initials: I
authors.lastname: Oz
authors.affiliation: Department of Radiology, Bulent Ecevit University, School of Medicine, Zonguldak, Turkey.
authors.forename: Oktay
authors.initials: O
authors.lastname: Erdem
keywords: Color; Doppler; Hepatic Artery; Portal Vein; Ultrasonography