Both examination were double blind. The ratio of peak systolic velocity (PSV) of the renal artery and abdominal aorta(RAR),intrarenal acceleration time (AT) were obtained.

• 每例患者均测量肾动脉峰值流速(PSV)与腹主动脉峰值流速比值(RAR),叶间动脉加速时间(AT)。 在双盲条件下,以肾动脉造影为标准,评价彩色多普勒超声诊断ARAS的准确性。