title: Renal duplex Doppler sonography in asymptomatic women during pregnancy.
abstract: The purpose of this study was to establish the normal range of the renal RI in pregnant women. Maternal renal RIs were calculated in 61 asymptomatic pregnant patients with at least unilateral pyelocaliectasis. A mean RI was calculated for each kidney. Overall, the mean RI was 0.61 +/- 0.05. The renal RI was > or = 0.70 in 4% (5/121) of kidneys with no statistically significant difference between the mean right (0.62 +/- 0.06) and left (0.60 +/- 0.04) kidney RIs. There was no correlation between trimester of pregnancy or degree of pyelocaliectasis and RI.
authors.affiliation: Department of Radiology, University of Minnesota Hospital, Minneapolis 55455.
authors.forename: G K
authors.initials: GK
authors.lastname: Nazarian
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: D001783:Blood Flow Velocity; D005260:Female; D006801:Humans; D007670:Kidney Calices / Q000000981:diagnostic imaging*; D011247:Pregnancy / Q000502:physiology*; D011263:Pregnancy Trimester, Third; D012016:Reference Values; D012079:Renal Circulation; D014463:Ultrasonography