彩色多普勒成像技术检测视网膜静脉阻塞眼血流动力学的变化

目的探讨视网膜静脉阻塞（ｒｅｔｉｎａｌｖｅｉｎｏｃｃｌｕｓｉｏｎ，ＲＶＯ）患者视网膜中央动脉（ｃｅｎｔｒａｌｒｅｔｉ－ｎａｌａｒｔｅｒｙ，ＣＲＡ）和视网膜中央静脉（ｃｅｎｔｒａｌｒｅｔｉｎａｌｖｅｉｎ，ＣＲＶ）血流动力学特征及其意义。方法使用ＡＴＬ－ＨＤＩ３０００彩色多普勒诊断仪，检测ＲＶＯ患者患眼４８只、对侧临床健康眼３９只及正常对照眼４０只的ＣＲＡ收缩期峰值血流速度（ｐｅａｋｓｙｓｔｏｌｉｃｖｅｌｏｃｉｔｙ，ＰＳＶ）、舒张末期血流速度（ｅｎｄ－ｄｉａｓｔｏｌｉｃｖｅｌｏｃｉｔｙ，ＥＤＶ）和血管搏动指数（ｐｕｌｓａｔｉｌｉｔｙｉｎｄｅｘ，ＰＩ），ＣＲＶ最大血流速度（ｍａｘｉｍｕｎｖｅｌｏｃｉｔｙ，Ｖｍａｘ）。结果ＲＶＯ患眼、对侧临床健康眼ＣＲＡ的ＰＳＶ和ＥＤＶ均显著低于正常对照眼，ＲＶＯ患眼ＰＩ显著高于正常对照眼；ＲＶＯ患眼ＣＲＡ的ＰＳＶ显著低于ＲＶＯ对侧临床健康眼，ＲＶＯ患眼ＰＩ显著高于ＲＶＯ对侧临床健康眼；ＲＶＯ患眼、对侧临床健康眼ＣＲＶ的Ｖｍａｘ均显著低于正常对照眼。结论ＲＶＯ患眼和对侧临床健康眼血流动力学异常。彩色多普勒成像技术可作为其早期诊断的重要手段

Measurement of ocular hemodynamics in retinal vein occlusion using color Doppler imaging

Objective To investigate the changes of ocular hemodynamics in patients with retinal vein occlussion(RVO). Methods The hemodynamic parameters(PSV,EDV,PI,Vmax)of central retinal artery(CRA)and central retinal vein(CRV)were measured in the involved eyes(n=48) with RVO and the contralateral clinically healthy eyes(n=39) and in the control eyes(n=40) by color Doppler imaging (CDI)(ATL HDI3000). Results Peak systolic velocity (PSV) and end diastolic velocity (EDV) were significantly lower in the CRA of involved eyes and clinically healthy eyes of patients with RVO compared with control eyes,and pulsatility index(PI)was significantly higher in the CRA of involved eyes of patients with RVO compared with control eyes.PSV were significantly lower in the CRA of involved eyes of patients with RVO compared with their clinically healthy eyes.Pulsatility index(PI)was significantly higher in the CRA of involved eyes of patients with RVO compared with their clinically healthy eyes.Maximun vein velocity(Vmax) was significantly lower in the CRV of involved eyes and clinically healthy eyes of patients with RVO compared with control eyes. Conclusion The changes of hemodynamics in CRA,CRV of involved eyes of patients with RVO may invade their clinically healthy eyes.CDI may be helpful to early diagnosis for RVO.