Doppler velocimetry

Doppler velocimetry

Obstetrics A technique used to analyze blood flow waveforms, allowing accurate noninvasive measurement of volume and velocity of blood flow

Doppler velocimetry

The use of Doppler ultrasound to determine the speed of blood flow through arteries and veins. During pregnancy Doppler ultrasonography can determine whether blood flow rates are adequate in the uterine artery, placenta, and umbilical cord vessels.
See: uteroplacental insufficiency
References in periodicals archive ?
Contract notice: Supply delivery and installation of a laser doppler velocimetry system and an imaging velocimetry system fast stereoscopic particle
16] Weekly monitoring of Doppler velocimetry of the umbilical artery, CTG and assessment of the AFV were done.
Role of uterine artery Doppler velocimetry indices and plasma adrenomedullin level in women with unexplained recurrent pregnancy loss.
The topics include laser Doppler velocimetry technology for integration and directional discrimination, thin film resistance temperature detectors, inductive sensors fitted in aircraft windows to measure lightning current, wideband ultrasonic transmitter and sensor array for in-air applications, and applying inertial sensors in developing smart particles.
1997) conducted similar laser doppler velocimetry measurement on the same type of 6-bladed Rushton turbine.
This telltale shift was detected using a technique called Doppler velocimetry, allowing the tiny force to be calculated.
In addition, a combination of measurements of angiogenic factors like PLGF and abnormal uterine artery Doppler velocimetry in the middle of the second trimester may be useful in future screening for early prediction of pregnancy complications.
Uterine artery Doppler velocimetry in the prediction of adverse obstetric outcomes in unexplained MSAFP elevations.
Fetuses were classified as IUGR if their estimated fetal weight was below the 10th percentile with Doppler velocimetry greater than 2 standard deviations.
Airflow pattern and turbulence distributions strongly depend on the ventilation rates, as has been observed in smoke visualization (Timmons 1984a, 1984b), Laser Doppler Velocimetry measurements (LDV, Nielsen 1974), Hotwire measurements (Zhang 1991), Particle Image Velocimetry (PIV) measurements (Zhao 2000), and Volumetric Particle Streak-Tracking Velocimetry (VPSTV) measurements (Sun 2007; Jiang 2007).
The MID LaserSpeed non-contact length and speed measurement system uses a proven technology called Laser Doppler Velocimetry to accurately measure the length and speed of any moving product or surface to an accuracy of +/- 0.
The LaserSpeed 4000-3 non-contact length and speed measurement gauge uses a proven technology called Laser Doppler Velocimetry to accurately measure the length and speed of any moving product or surface to an accuracy of [+ or -]0.

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