【摘要】 目的：应用彩色多普勒成像（ｃｏｌｏｒＤｏｐｐｌｅｒｉｍａｇｉｎｇ，ＣＤＩ）技术作正常人眼部血流动力学研究。方法：用ＣＤＩ测量９０例（１８０只眼）正常人眼动脉（ｏｐｈｔｈａｌｍｉｃａｒｔｅｒｙ，ＯＡ），视网膜中央动脉（ｃｅｎｔｒａｌｒｅｔｉｎａｌａｒｔｅｒｙ，ＣＲＡ），睫状后动脉（ｐｏｓｔｅｒｉ－ｏｒｃｉｌｉａｒｙａｒｔｅｒｙ，ＰＣＡ）的血流参数，分析其与影响因素间关系。结果：ＯＡ，ＣＲＡ，ＰＣＡ的收缩期、舒张期血流速度分别为（单位ｃｍ／ｓ）：３１．７±１０．９，７．２±２．６；１０．２±３．４，２．８±１．２；１１．３±３．６，３．２±１．４。ＯＡ血流参数与年龄呈负相关，与红细胞计数，红血球压积呈正相关，与性别、眼别、正常范围眼压无关。正常眼部动脉血管的正常频谱形态为近似三角形，三峰双切迹，呈高阻波形，搏动指数和阻力指数均较高，各频带宽度基本相同，无明显频窗。结论：ＣＤＩ的眼部应用可为了解眼及其供应血管的血流动力学情况奠定基础。更多还原

【Abstract】 OBJECTIVE:To investigate ocular vessel flow velocity in normal eyes by color Doppler imaging(CDI).METHODS: Ninety people(180 normal eyes)had flow velocity measured by CDI in three vessels,ophthalmic artery(OA),central retinal artery(CRA) and posterior ciliary artery(PCA),and the relations between velocity and affecting factors were ana lysed. RESULT: The diastolic and systolic velocity of OA,CRA and PCA were (31.7±10.9)cm/s,(7.2±2.6)cm/s,(10.2±3.4)cm/s,(2.8±1.2)cm/s and (11.3±3.6)cm/s,(3.2±1.4)cm/s respectively.The velocity of OA had possitive correlativity with RBC,HCT and negative correlativity with age,while it revealed no relationship with sex,laterality of right or left eye,and normal IOP.CDI of ocular vessels in normal eyes is a triangle with three peaks and double sunkens in its frenquency spectum, revealed highly resistant,and both the pulsatility and resistive indexes were relatively high.The width of each frequency band basically was the same,and there was no obvious frequency window.CONCLUSION: The ocular application of CDI might lay the foundation of a comparatively comprehensive knowledge of the ocular hemodynamics.更多还原