彩色多普勒超声检查眼底动脉血流对诊断糖尿病并发眼底动脉早期病变的价值

The value of detecting blood flow of early ocular fundus artery affection of diabetes by color Doppler ultrasound

目的探讨彩色多普勒超声检查眼底动脉血流对诊断糖尿病并发眼底动脉早期病变的价值。方法利用彩色多普勒超声检测糖尿病患者眼底动脉,获得眼动脉(OA)、视网膜中央动脉(CRA)的血流频谱,并测量其参数:收缩期峰值速度(PSV)、舒张末期速度(EDV)、阻力指数(RI)、搏动指数(PI)。结果糖尿病患者OA、CRA血流频谱均表现为波峰消失呈圆钝状,S2>S1,31例PSV表现为血流加速型,68例PSV表现为血流减慢型,均伴有舒张末流速降低及RI、PI均有不同程度的增高。结论利用彩色多普勒超声动态检测眼底动脉血流情况,判断视网膜血液循环功能,对糖尿病患者眼底动脉发生早期病变的诊断与防治有一定价值。

Objective To discuss the value of detecting blood flow of early ocular fundus artery affection of diabetes by color Doppler ultrasound. Methods Blood stream frequency spectrum of OA and CRA was gained respectively by detecting patients with non-insulin dependent diabetes （NIDD） by color Doppler ultrasound, and measure its parameters： peak systolic velocity, enddiastolic velocity, resistance index and pulse index. Results Blood tream frequency spectrum of two blood vessel CRA and OA showed that the peak disappeared with blunt round,and S2〉S1 ,some of which showed blood flow acceleration and blood flow deceleration,but both with lower enddiastolic velocity and higher RI and PI. Conclusion It is very important for diagnosis and prevention of diabetic retinopathy to detect blood flow of artery and branches of ocular fundus artery dynamically and to perceive the metergasis of retinal circulation.