(来学网)多普勒鉴别梗阻与非梗阻性肾积水的标准:①非梗阻性肾积水RI<0.7②梗阻性肾积水RI>0.7③非梗阻性肾积水RI>0.7④梗阻性肾积水RI<0.7
  • A.
    (来学网)①②
  • B.
    (来学网)③④
  • C.
    (来学网)①④
  • D.
    (来学网)②③
正确答案:
A