title: Effect of diffuse fatty infiltration of the liver on hepatic artery resistance index.
abstract: OBJECTIVE
  This study was conducted to evaluate the effect of various degrees of diffuse fatty infiltration of the liver on the hepatic artery resistance index.
  
  
  METHODS
  One-hundred forty subjects were examined using standard color and spectral Doppler sonography protocols. Fatty infiltration of the liver was identified and graded sonographically. The patients were grouped (n = 35 in each of 4 groups) according to the degree of diffuse fatty infiltration of the liver as follows: normal (group 1), mild (group 2), moderate (group 3), and severe (group 4). The resistance index calculated for each patient was the mean of 3 measurements. Mean resistance index of the hepatic artery was then calculated for each group.
  
  
  RESULTS
  The mean resistance index was 0.81 +/- 0.04 for group 1, 0.79 +/- 0.06 for group 2, 0.75 +/- 0.05 for group 3, and 0.73 +/- 0.05 for group 4. We found a statistically significant (p < 0.05) decrease in resistance index when comparing groups 3 and 4 with groups 1 and 2 separately.
  
  
  CONCLUSIONS
  Hepatic artery resistance index decreases as the severity of diffuse fatty infiltration increases.
authors.affiliation: Department of Radiology, Istanbul University, Cerrahpasa Medical Faculty, Kocamustafapasa Street, 34300-Istanbul, Turkey.
authors.forename: Ismail
authors.initials: I
authors.lastname: Mihmanli
authors.forename: Fatih
authors.initials: F
authors.lastname: Kantarci
authors.forename: Mehmet Halit
authors.initials: MH
authors.lastname: Yilmaz
authors.forename: Bengi
authors.initials: B
authors.lastname: Gurses
authors.forename: Dogan
authors.initials: D
authors.lastname: Selcuk
authors.forename: Gunduz
authors.initials: G
authors.lastname: Ogut
authors.forename: Ayca
authors.initials: A
authors.lastname: Altug
authors.forename: Omer
authors.initials: O
authors.lastname: Uysal
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D005234:Fatty Liver / Q000000981:diagnostic imaging / Q000503:physiopathology*; D005260:Female; D006499:Hepatic Artery / Q000000981:diagnostic imaging / Q000503:physiopathology*; D006801:Humans; D008099:Liver / Q000098:blood supply* / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D012720:Severity of Illness Index; D018608:Ultrasonography, Doppler; D014655:Vascular Resistance / Q000502:physiology*