Test/retest reproducibility of color doppler imaging assessment of blood flow velocity in orbital vessels

Alon Harris, Thomas H. Williamson, Bruce Martin, John A. Shoemaker, Robert C. Sergott, George L. Spaeth, Jay L. Katz

Research output: Contribution to journalArticle

126 Scopus citations


Purpose: 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. Patients and Methods: 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. Results: 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%. Conclusion: 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.

Original languageEnglish (US)
Pages (from-to)281-286
Number of pages6
JournalJournal of Glaucoma
Issue number4
StatePublished - Aug 1995



  • Blood flow
  • Color Doppler imaging
  • Reproducibility

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Harris, A., Williamson, T. H., Martin, B., Shoemaker, J. A., Sergott, R. C., Spaeth, G. L., & Katz, J. L. (1995). Test/retest reproducibility of color doppler imaging assessment of blood flow velocity in orbital vessels. Journal of Glaucoma, 4(4), 281-286.