应用彩色多谱勒成像术对正常人眼血流力学研究

Color Doppler analysis of ocular blood velocity in normal persons eyes

目的 :应用彩色多谱勒成像 (CDI)技术对正常人眼部血流动力学研究。方法 :用美国 40 0 AU全身多谱勒血流图诊断仪 ,测量 5 3例 (10 6眼 )正常人眼动脉 (OA) ,视网膜中央动脉 (CRA) ,睫状后动脉 (PCA)的血流参数 ,经统计学处理取得其正常值范围 ,并对相关影响因数进行分析。结果 :CRA、PCA、OA收缩期峰值速度 (PSV)、舒张末期血流速度(EDV)及阻力指数 (RI)分别为 :11.5 0± 4.6 9,4.30± 1.34,0 .6 3± 0 .12 ;19.92± 8.82 ,7.97± 3.96 ,0 .5 9± 0 .0 6 ;34.12± 8.19;11.6 8± 3.34,0 .6 6± 0 .0 5。各血流参数与性别、眼别及正常范围眼压无显著差异 (P >0 .0 5 ) ,OA及 PCA的 PSV与年龄负相关 ,CRA的 RI与年龄正相关。结论 :应用 CDI可了解眼血流力学情况 。

Objective:To investigati ocular vessel flow velocity in normal persons eyes by color Doppler imaging(CDI) Methods:flow velocity in ophthalmic artery(OA),central retinal artery (CRA) and posterior ciliary artery (PCA) were measured by AU4/dea(USA),and relation between velocity and affecting factor were analysed Result:The peak systolic velocity(PSV),end diastotic velocity(EDV) and resistance index (RI) of CRA,PCA and OA were (11 5±4 69)cm/s,(4 3±1 34)cm/s(0 63±0 12)cm/s,(19 92±8 82)cm/s,(7 97±3 93)cm/s,(0 59±0 06)cm/s and (34 12±8 19)cm/s,(11 68±3 34)cm/s,(0 66±0 05)cm/s repectively There were no significant differences in PSV、EDV and RI、PI between both eyes,and between mal and female,and in normal blood pressure The PSV of OA and PCA had negative correlativity with age,the RI of CRA had positive correlativity with age Conclusion:the ocular application of CDI might lay the foundation of a comparatively comprehensive knowledge of the ocular hemodynamics and offer evidences of some eye diseases