Departments of Ophthalmology, and Physiology and Biophysics, Indiana University School of Medicine, Indianapolis, Indiana, U.S.A., *Tennet Institute of Ophthalmology, Glasgow, Scotland, daggerWills Eye Hospital, Philadelphia, Pennsylvania, U.S.A., and double dagger;Medical Sciences Program, Indiana University, Bloomington, Indiana, U.S.A.
J Glaucoma. 1995 Aug;4(4):281-6.
The purpose of this study was to evaluate the test-retest reproducibility of measures of blood flow velocities using color Doppler imaging (CDI) in orbital arteries.
Measures of peak systolic velocity, end-diastolic velocity, and resistive index were performed in a group of 15 normal tension glaucoma patients and in 15 healthy subjects using the Siemens Quantum 2000 CDI system with a 7.5 MHz linear probe. After each velocity measure in each vessel, the probe was removed and then replaced to repeat the measurement -2 min later.
For all subjects, the coefficients of reliability for measures of peak systolic velocity were 12% in the ophthalmic artery, 25% in the central retinal artery, and 19% in a short posterior ciliary artery. For end diastolic velocity, the coefficients were 6%, 11%, and 25%, respectively. The coefficients for resistive index were 4%, 11%, and 38%.
CDI produces highly reproducible measures in the ophthalmic artery. Measures in the central retinal artery are somewhat more variable but seem reasonably reproducible. Short posterior ciliary measurements were the most variable, suggesting that current methods for assessing these vessels may not be sufficiently reliable.
本研究旨在评估使用彩色多普勒成像（CDI）测量眼动脉血流速度的重复性。
使用西门子 Quantum 2000 CDI 系统和 7.5MHz 线性探头，对 15 例正常眼压性青光眼患者和 15 例健康受试者的收缩期峰值速度、舒张末期速度和阻力指数进行了测量。在每条血管的每次速度测量后，将探头取出，2 分钟后重新放置以重复测量。
对于所有受试者，眼动脉收缩期峰值速度的可靠性系数为 12%，视网膜中央动脉为 25%，睫状后短动脉为 19%。舒张末期速度的系数分别为 6%、11%和 25%。阻力指数的系数分别为 4%、11%和 38%。
CDI 在眼动脉中产生高度可重复的测量值。视网膜中央动脉的测量值稍不稳定，但似乎具有合理的可重复性。睫状后短动脉的测量值最不稳定，表明目前评估这些血管的方法可能不够可靠。
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