Reproducibility of transcranial Doppler ultrasound examinations of the ophthalmic artery flow velocity. Issue 1 (January 1993)

• Record Type: Journal Article
• Authors: Rojanapongpun, P; Morrison, B; Drance, S M
• Is Part Of: British journal of ophthalmology. Volume 77:Issue 1(1993)
• Page Start: 22
• Page End: 24
• Publication Date: 1993-01
• Subjects: Ophthalmology -- Periodicals; 617.7
• DOI: 10.1136/bjo.77.1.22
• Languages: English
• ISSNs: 0007-1161

Abstract

Abstract : 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.