title: [Quantitative evaluation of contrast-enhanced ultrasound in the early diagnosis of acute renal failure of rabbits].
abstract: OBJECTIVE
  To evaluate the early diagnostic value of contrast-enhanced ultrasound (CEUS) in acute renal failure (ARF) of rabbit.
  
  
  METHODS
  The rabbit model of ARF was established by intramuscular injection of 50% glycerin (12 ml/kg) into the hind legs of 18 New Zealand rabbits. CEUS was performed for both kidneys before injection and 6 hours after the injection. The slope rate of ascending curve (A), the slope rate of descending curve (alpha), area under curve (AUC), derived peak intensity (DPI), and time to peak (TTP) were measured in renal cortex of rabbits using Q-lab software package. Blood serum urea nitrogen (BUN) and serum creatinine (SCr) were measured.
  
  
  RESULTS
  The values of A and alpha before the injection of glycerin were (3.07 +/- 1.83) dB/s and (0.19 +/- 0.15)/s, respectively, which were significantly higher than the values after injection [ (2.76 +/- 1.31) dB/s and (0.09 +/- 0.02)/s, respectively] (P < 0.05). The values of AUC and TTP before the injection of glycerin were (137.4 +/- 68.4) dB s and (6.33 +/- 3.71) s, which were significantly lower than the values after injection [(309.5 +/- 88.9) dB s and (8.61 +/- 3.97) s, respectively] (P < 0.01). No significant change of DPI, BUN or SCr was found.
  
  
  CONCLUSIONS
  CEUS can precisely display the hemodynamic change of ARF model of rabbit in the early stage, with superior sensitivity than BUN and SCr. It may be a promising imaging method for the early diagnosis of ARF.
authors: Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
authors: Yi
authors: Y
authors: Dong
authors: Wen-Ping
authors: WP
authors: Wang
authors: Hong
authors: H
authors: Ding
authors: Xi-Yuan
authors: XY
authors: Lin
authors: Pei-Li
authors: PL
authors: Fan
authors: Jia-Ying
authors: JY
authors: Cao
authors: Ben-Hua
authors: BH
authors: Xu
mesh_terms: D058186:Acute Kidney Injury / Q000000981:diagnostic imaging* / Q000503:physiopathology; D000818:Animals; D001806:Blood Urea Nitrogen; D003287:Contrast Media; D003404:Creatinine / Q000097:blood; D042241:Early Diagnosis; D011817:Rabbits; D014463:Ultrasonography
chemical_list: D003287:Contrast Media; D003404:Creatinine