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Doppler velocimetry of the fetal middle cerebral and renal arteries: interobserver reliability.
Author(s) -
Fong K,
Ryan M L,
Cohen H,
Amankwah K,
Ohlsson A,
Myhr T,
Hannah M
Publication year - 1996
Publication title -
journal of ultrasound in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 91
eISSN - 1550-9613
pISSN - 0278-4297
DOI - 10.7863/jum.1996.15.4.317
Subject(s) - medicine , intraclass correlation , doppler effect , cerebral arteries , cardiology , velocimetry , diastole , middle cerebral artery , blood pressure , ischemia , clinical psychology , physics , astronomy , optics , psychometrics
Using color and pulsed Doppler ultrasonography, the interobserver reliability of measurements in the fetal circulation was evaluated in 41 pregnancies of 25 to 39 weeks' gestation. Two observers recorded flow velocity waveforms from the middle cerebral and renal arteries for measurement of peak systolic, minimum diastolic, and mean velocities, pulsatility index, and resistive index. Intraclass correlation coefficient of reliability was calculated by analysis of variance. Substantial interobserver agreement was found for pulsatility index and minimum diastolic velocity in both arteries. Therefore, these measurements have the greatest clinical applicability.