彩色多普勒对颈内动脉狭窄患者视网膜中央动脉的血流检测

目的了解不同程度的颈内动脉狭窄患者,其视网膜中央动脉的血流状况,探讨颈内动脉狭窄与视网膜中央动脉血流的病变关系。方法选颈内动脉彩色多普勒超声检查,诊断有明确颈内动脉粥样硬化造成颈内动脉狭窄的患者54例,其中轻度狭窄28例(直径狭窄率<50%),中度及中度以上狭窄26例(直径狭窄率≥50%)。对照组40例,为彩色多普勒证实无颈内动脉粥样硬化患者。测量入组患者视网膜中央动脉及眼动脉的各项血流参数,包括收缩期峰值流速(Vs)、舒张末期流速(Vd)以及血管阻力指数(RI)。结果随着颈内动脉狭窄程度的加重,视网膜中央动脉的血流动力学参数会发生相应变化,其中颈内动脉中重度狭窄组的视网膜中央动脉参数改变最明显。而眼动脉各参数与对照组相比无显著统计学差异。结论颈内动脉狭窄可影响视网膜中央动脉供血,彩色多普勒超声检查可明确颈内动脉及眼部供血情况。

The detection of blood flow in retinal central artery of patients with arteriostenosis of internal carotid artery by color Doppler ultrasonography

Objective To study the status of blood flow in retinal central artery of patients with different degree of arteriostenosis in internal carotid artery,and to explore the relationship between arteriostenosis of internal carotid artery and status of blood flow in retinal central artery.Methods Fifty four patients were diagnosed as arteriostenosis of internal carotid artery by color Doppler imaging,including 28 cases of mild arteriostenosis(rate of stenosis in diameter <50%) and 26 cases of midrange or above st...