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- K Fong, M L Ryan, H Cohen, K Amankwah, A Ohlsson, T Myhr, and M Hannah.
- Department of Medical Imaging, Women's College Hospital, University of Toronto, Ontario, Canada.
- J Ultrasound Med. 1996 Apr 1;15(4):317-21.
AbstractUsing 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.
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