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Gestation-specific reference intervals for fetal cardiac Doppler indices from 12 to 40 weeks of gestation
Cardiac Doppler Fetal Gestation Age Reference Range Ultrasound
2013/1/31
We aimed to establish gestation age specific reference intervals for Doppler indices of fetal cardiac function from 12 to 40 weeks of pregnancy. In a cross-sectional observational study of singleton p...
Development of a New Method for Discriminating Embolus from Air Bubble by Active Ultrasound Doppler Method. 1 (Experiments of Ultrasound Irradiation Perpendicular to a Tube Axis in Flows of Water and Modeled Blood)
USD TCD cerebral embolism characteristic acoustic impedance acoustic radiation force
2009/8/24
An “active” ultrasound Doppler method was newly developed in order to directly and easily discriminate emboli from micro bubbles flowing in blood vessel. The principle of this method is based on measu...
Development of a Miniaturized Fiber-optic Laser Doppler Velocimetry Sensor for Local Blood Velocity Measurement—Measurement of Velocity Profile of Pulsatile Blood Flow in Model Vessel—
fiber-optic LDV sensor pulsatile flow opaque fluid local velocity measurement flow
2009/6/8
In order to measure local velocity in a pulsatile flow, the optical system and the curvature of the fiber sensor tip were improved. The fiber sensor was inserted at an insertion angle of 120 deg. thr...
Application of Static Pressure Change in Estimation of Elastic Parameters of Rabbit’s Artery by Doppler Ultrasound
Doppler ultrasound static pressure change elastic parameters carotidartery
2010/2/4
Backgrounds/Objectives : Noninvasive evaluation of elastic properties of vessel wall is hampered by the absence of methods to directly asse ss local elasticity. In order to invasively record the stati...
Effect of non-linearity in predicting doppler waveforms through a novel model
non-linearity doppler waveforms a novel model
2010/3/1
Total harmonic distortion (THD) is found to be informative in determining the Feto-maternal health. Effects of the blood density, the viscosity and the elasticity changes on the blood FVW are simulate...