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Pediatric Radiology

, Volume 21, Issue 6, pp 395–397 | Cite as

Cerebral-blood-flow-velocity measurements in neonates: Technique and interobserver reliability

  • A. Ohlsson
  • K. Fong
  • M. L. Ryan
  • L. Yap
  • J. D. Smith
  • A. T. Shennan
  • P. Glanc
Originals

Abstract

The interobserver reliability for absolute cerebral-blood-flow-velocity measurements by colour and duplex Doppler sonography was tested in 32 neonates with a mean birth weight of 1489 (SD 644) g, and a gestational age of 29.9 (SD 3.5) weeks. Using standardized technique, two observers recorded on videotape, the Doppler spectrum of the anterior cerebral artery, the intracranial internal carotid artery and the middle cerebral artery. Peak systolic flow, end diastolic flow, mean flow velocity, resistive index and pulsatility index were computed from 3 consecutive waveforms by each observer. The estimates of interobserver reliability using the intraclass correlation coefficient of the examiners varied from 0.95 to 1.00. Therefore, cerebral blood flow velocity can be reliably measured in premature infants.

Keywords

Flow Velocity Cerebral Blood Flow Cerebral Artery Internal Carotid Artery Premature Infant 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • A. Ohlsson
    • 1
  • K. Fong
    • 2
  • M. L. Ryan
    • 1
  • L. Yap
    • 1
  • J. D. Smith
    • 3
  • A. T. Shennan
    • 1
  • P. Glanc
    • 2
  1. 1.Department of Newborn and Developmental PaediatricsUniversity of TorontoTorontoCanada
  2. 2.Department of Radiology, Women's College HospitalUniversity of TorontoTorontoCanada
  3. 3.Clinical Epidemiology Unit, Samuel Lunenfeld Research Institute, Mount Sinai HospitalUniversity of TorontoTorontoCanada

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