试题与答案

肾动脉狭窄的超声诊断标准()。①狭窄处血流亮度增加,流速加快,Vmax≥180cm/

题型:单项选择题

题目:

肾动脉狭窄的超声诊断标准()。①狭窄处血流亮度增加,流速加快,Vmax≥180cm/s②重度狭窄处血流亮度减低,流速减慢③Vmax狭窄处/Vmax邻近的腹主动脉≥3.5④Vmax腹主动脉/Vmax狭窄处≥3.5⑤AT≥0.07s,AC<3.0m/82,RI<0.5⑥AT≤0.07s,AC>3.0m/s2,RI>0.5

A.①②③⑤

B.①③⑤

C.①②④⑥

D.①④⑥

答案:

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