![](https://lstatic.shangxueba.com/sxbzda/h5/images/m_q_title.png)
[单选题]
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
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)
A.①②③⑤
B. ①③⑤
C. ①②④⑥
D. ①④⑥
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!