Observer experience improves reproducibility of color Doppler sonography of orbital blood vessels

J. Németh, Rita Kovács, Zoltán Harkányi, Krisztina Knézy, Katalin Sényi, István Marsovszky

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Purpose. The study investigated the reproducibility of orbital blood flow measurements with color Doppler imaging (CDI) at different stages of observer experience. Methods. The subjects were 31 healthy volunteers and 2 sequential groups of 25 glaucoma patients each. Repeated blood flow measurements (usually 3 sets) in orbital vessels (ophthalmic artery, short posterior ciliary arteries, central retinal artery, and central retinal vein) were performed by the same observer in a single session in each subject. Results. The parameters with the best reproducibility were the resistance index (mean coefficient of variation [COV], 3.3-8.8%), the peak systolic velocity (mean COV, 6.9-13.7%), the time-averaged velocity (mean COV, 7.2-16.0%), and the systolic acceleration time (mean COV, 8.8-12.3%). The mean COV was greater (9.9-20.3%) for the other arterial flow parameters (end-diastolic velocity and systolic acceleration) and for the venous flow velocities (maximum and minimum). The COVs of the parameters were improved by 20-40% as the observer became more experienced in ophthalmic CDI. Conclusions. We confirm the general reliability of CDI measurements in orbital vessels and show that observer experience improves reproducibility. It appears, however, that observer performance in these measurements is vessel specific.

Original languageEnglish
Pages (from-to)332-335
Number of pages4
JournalJournal of Clinical Ultrasound
Volume30
Issue number6
DOIs
Publication statusPublished - 2002

Fingerprint

Doppler Color Ultrasonography
blood vessels
Blood Vessels
Color
Ciliary Arteries
Eye Color
Ophthalmic Artery
Retinal Artery
color
Retinal Vein
orbitals
arteries
vessels
coefficients
Glaucoma
flow measurement
blood flow
Healthy Volunteers
glaucoma
veins

Keywords

  • Color Doppler ultrasonography
  • Glaucoma
  • Learning curve
  • Orbital vessels
  • Reproducibility

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology
  • Acoustics and Ultrasonics

Cite this

Observer experience improves reproducibility of color Doppler sonography of orbital blood vessels. / Németh, J.; Kovács, Rita; Harkányi, Zoltán; Knézy, Krisztina; Sényi, Katalin; Marsovszky, István.

In: Journal of Clinical Ultrasound, Vol. 30, No. 6, 2002, p. 332-335.

Research output: Contribution to journalArticle

Németh, J. ; Kovács, Rita ; Harkányi, Zoltán ; Knézy, Krisztina ; Sényi, Katalin ; Marsovszky, István. / Observer experience improves reproducibility of color Doppler sonography of orbital blood vessels. In: Journal of Clinical Ultrasound. 2002 ; Vol. 30, No. 6. pp. 332-335.
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