title: [Experimental study of the characteristics of renal blood flow with contrast ultrasound].
abstract: OBJECTIVE
  To study the characteristics of renal blood flow with contrast ultrasound.
  
  
  METHODS
  The examination of the renal ultrasonography was performed in 10 dogs after intravenous injection of Quanfuxian (a contrast agent consisting of C3F8 microbubbles).
  
  
  RESULTS
  Contrast visualization appeared in the renal cortex and then in the outer to inner medulla at the baseline level after administration of the contrast agent. Notable differences in the values of microvascular volume (A, which was 120.3 in the corted vs 110.8 in the medulla, P>0.05), microcirculatory flow velocity (beta, which was 1.39 in the corted vs 0.54 in the medulla, P<0.05), and microcirculatory flow rate (A x beta, 167.4 in the corted vs 59.5 in the medulla, P<0.05) were found between the corted and the medulla, with also marked difference between the the corted-to-the medulla ratios of beta and A (0.612 vs 0.078, P<0.05).
  
  
  CONCLUSIONS
  Contrast ultrasound of the kidney provides a useful means of renal circulatory flow study.
authors.affiliation: Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. xajngo@fimmu.com
authors.forename: Jin-guo
authors.initials: JG
authors.lastname: Xie
authors.forename: Ping
authors.initials: P
authors.lastname: Zeng
authors.forename: Wen-xing
authors.initials: WX
authors.lastname: Xiao
authors.forename: Jian-ping
authors.initials: JP
authors.lastname: Bin
authors.forename: Yi-li
authors.initials: YL
authors.lastname: Liu
mesh_terms: D000818:Animals; D001783:Blood Flow Velocity; D004285:Dogs; D005260:Female; D005466:Fluorocarbons; D007668:Kidney / Q000000981:diagnostic imaging*; D008297:Male; D045423:Microbubbles; D012079:Renal Circulation; D014463:Ultrasonography
chemical_list: D005466:Fluorocarbons; C042852:perflutren