彩色多普勒超声在急性前循环梗死患者颈动脉硬化检测中的应用

选择120例急性前循环梗死患者作为急性前循环梗死组，均经MRI/CT证实；另90例非梗死患者作为对照组。分别用彩色多普勒超声观察双侧颈动脉管腔内径、内-中膜厚度( IMT)、收缩期最大峰值流速( PSV )、舒张末期流速( EDV)、收缩早期加速时间( AT)、阻力指数( RI)、搏动指数( PI)；观察颈动脉有无斑块、斑块的性质和管腔狭窄程度。急性前循环梗死组IMT较对照组增厚( P<0．01)；IMT增厚检出率、中-重度狭窄检出率和颈动脉不稳定斑块检出率均明显高于对照组(P<0．01)，严重者可检测到颈动脉完全或不完全闭塞；各项血流参数显示，急性前循环梗死组颈总和颈内动脉PSV、EDV均明显低于对照组( P<0．05)，急性前循环梗死组颈内动脉 RI 及 PI 值均明显高于对照组( P <0．05)，颈内动脉AT低于对照组(P<0．05)。

Color Doppler ultrasound in the evaluation of carotid arteriosclerosis in patients with acute cerebral infarction of anterior circulation

A totel of 120 patients with CT or MRI proved as acute cerebral infarction group of anterior circulation and 90 non-infarction patients as the control group were studied. The diameter,inter median thickness( IMT) ,peak systolic velocity ( PSV ) , end diastolic velocity ( EDV ) , early shrinkage acceleration time ( AT ) , resistance index ( RI) ,and pulsatility index( PI) of carotid artery,and whether there was arteriosclerotic plaque or stenosis,and the properties of plaque were examined with color Doppler ultrasound. In acute cerebral infarction group of anterior cir-culation,the IMT was thicker that in the control group(P<0. 01). The incidence of the film thickness,moderate-se-vere stenosis and instable carotid artery plaque in infaiction group of anterior circulation were obviousely higher than those in the control group(P<0. 01). Arterial complete or incomplete occlusion was observed in severe cases. The blood flow parameters showed that the PSV and EDV of common carotid and internal carotid in acute cerebral in-farction group of anterior circulation were lowerer than those in the control group. RI and PI of internal carotid in a-cute cerebral infarction group of anterior circulation were higher than those in the control group(P<0. 05),while AT was lower than those in the control group.