Rojanapongpun P, Morrison B, Drance S M
Department of Ophthalmology and Epidemiology, Faculty of Medicine, and University Hospital, University of British Columbia, Vancouver, Canada.
Br J Ophthalmol. 1993 Jan;77(1):22-4. doi: 10.1136/bjo.77.1.22.
Transcranial Doppler ultrasound measurements of ophthalmic artery velocity were made on 88 patients predominantly suffering from glaucoma. Of the four observed parameters, peak velocity, mean-enveloped velocity, diastolic velocity, and resistivity index, the latter was found to be the most reproducible (CV = 5.2%). The variability between patients was approximately twice that of the variability between consecutive measurements. Measurement error appeared to decrease as the operator gained experience.
对88例主要患有青光眼的患者进行了经颅多普勒超声测量眼动脉速度。在观察到的四个参数中，即峰值速度、平均包络速度、舒张期速度和阻力指数，发现阻力指数的重复性最好（变异系数=5.2%）。患者之间的变异性约为连续测量之间变异性的两倍。随着操作人员经验的增加，测量误差似乎有所减小。
