结果与正常组比较，妊娠晚期合并羊水过少的胎儿肾动脉搏动指数明显升高。

Results The PI of fetal renal artery with oligohydramnios were significantly higher than the normal.

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糖尿病并腔隙性脑梗死患者的动脉搏动指数明显高于无脑梗死组和对照组（P<0 .0 1）。

The arterial pulsatility index was significantly higher in patients with lacunar infarction than in those without lacunar infarction as well as in controls(P<0.01).

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结果部分患者脑动脉有不同程度的异常改变，其中单纯性搏动指数（PI）增高者占16 .11% ；

Results A part of patients' cerebral arteries had some degrees of arteriosclerosis. The pulsitility index(PI) was only increased in 16.11% patients;

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目的探讨正常双胎妊娠期间胎儿大脑中动脉搏动指数的变化；

Objective (1)To study the change of fetal middle cerebral artery pulsatility index(PIMCA) in twin pregnancy;

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目的探讨正常双胎妊娠期间胎儿大脑中动脉搏动指数的变化；

Objective (1)To study the change of fetal middle cerebral artery pulsatility index(PIMCA) in twin pregnancy;

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