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- W2390219344 abstract "Objective To investigate features of perfusion flow in renal artery stenosis(RAS)model by contrast-enhanced ultrasound and time-intensity curves. Methods The left renal arteries of 20 rabbits were progressively ligated form normal(0)to 1/3 of the artery(Ⅰ),2/3 of the artery(Ⅱ)and then the whole artery(Ⅲ).Contrast tuned imaging with time-intensity curves was used to quantitatively evaluate the renal perfusion flow at every level of artery stenosis. Results As renal artery was ligated gradually,time to enhancement(ET)was delayed,AUC area under the curve and PSI peak signal intensity decreased.Ascending slope in level Ⅱ was lower than that in level 0 and Ⅰ,but there was no significant difference between level 0 and level Ⅰ. Conclusion The contrast-enhanced ultrasound could be helpful to evaluate the renal ischemia perfusion flow at different levels of stenosis." @default.
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- W2390219344 date "2008-01-01" @default.
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- W2390219344 title "Evaluation of renal artery stenosis by contrast-enhanced ultrasound" @default.
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