Assessment of Doppler velocimetry of the fetal umbilical artery by multigate spectral Doppler scanning and traditional pulsed Doppler ultrasonography plus color flow mapping

Nikos Prapas, Giancarlo Mari, Ren Ing Liang, Joshua A. Copel

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The Doppler signal of blood flow originates from the sonographic scattering from the circulating red blood cells. However, the physics of blood flow is complex as expressed by the Bernoulli equation, and the flow velocity at different positions in the laminar flow of the same vessel is variable. Using multigate spectral Doppler scanning, we recorded multiple Doppler flow signals over a segment of the umbilical artery and compared the results with traditional pulsed Doppler ultrasonography. The intraobserver variations of the pulsatility index, the resistive index, and the systolic-to-diastolic ratio were evaluated in 30 human fetuses between 29 and 42 weeks of gestation. The correlation coefficient was calculated to establish the relationship between the results of multigate spectral Doppler scanning and the traditional pulsed Doppler ultrasonographic method. The Doppler indices of these two measurements are all significantly correlated. However, since a significant difference exists between the Doppler flow measurements of multigate spectral Doppler scanning and the traditional pulsed Doppler ultrasonographic method, the range of measurement agreement for these two methods suggests that this difference should be taken into account in the interpretation of Doppler flow velocity measurements.

Original languageEnglish (US)
Pages (from-to)831-835
Number of pages5
JournalJournal of Ultrasound in Medicine
Volume18
Issue number12
DOIs
StatePublished - Jan 1 1999

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Doppler Pulsed Ultrasonography
Doppler Color Ultrasonography
Umbilical Arteries
Rheology
Observer Variation
Physics
Fetus
Erythrocytes
Pregnancy

All Science Journal Classification (ASJC) codes

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging

Cite this

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