The Value of Color Doppler Ultrasound in the Diagnosis of Atherosclerotic Renal Artery Stenosis
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Yang Bai, Guanghong Han, Ying Sun, and Ying Xu
Objective: To explore the diagnostic function of color Doppler ultrasonography for senile arteriosclerotic renal artery stenosis (RAS). Methods: We selected 85 patients suffered from atherosclerotic hypertension and analyze ultrasound parameters of renal artery, which include peak systolic velocity ( PSV ), end diastolic velocity ( EDV ), resistance index ( RI ), accelerate time ( AT ) and acceleration ( AC ). We calculated the PSV ratio of the renal artery to the abdominal aorta (RAR), the PSV ratio of the renal artery to the interleaf artery (RIR). Double blind method was used in this study and renal arteriography was used as the gold standard. Result: Color Doppler ultrasound is a useful diagnostic technique for atherosclerotic RAS. PSV≥160 cm/s, RAR>2.3 is an indicator of stenosis ≥ 50%, while interlobular artery AT>0.07s suggests more than 75% of RAS.
angiography, renal artery stenosis, ultrasonography, atherosclerosis, ARAS, Doppler, renal artery obstruction