Introduction to Ultrasonic Doppler

The ultrasonic Doppler FHR detector is widely used to monitor the fetus’s health due to its advantages of non-invasion, high sensitivity, and good directivity.

DVT was diagnosed by ultrasonic Doppler examination, and PE was confirmed by intravenous radiocontrast computed tomography.

7 days after treatment, the cardiac functions of all patients were observed by ultrasonic Doppler, as were the microcirculations by myocardial contrast echocardiography (MCE).

Ultrasonic Doppler-based sensors are more robust and deployable either in wireline or logging while drilling (LWD) conditions; however, due to the different sensing physics, the measurement results may vary.

Using a tourniquet in routine TKA exacerbates the early post-operative hypercoagulable status together with a higher incidence of below-knee asymptomatic DVT observed via conventional coagulation tests, TEG, and ultrasonic Doppler.

In our examination, we determined that non-stress tests and ultrasonic Doppler tests were used to evaluate fetal well-being.

This paper proposes a fully digital signal processing scheme for ultrasonic Doppler endoscope imaging.

Many common techniques for flow measurement, such as Particle Image Velocimetry (PIV) or Ultrasonic Doppler Velocimetry (UDV), rely on the presence of reflectors in the fluid.

Laser Doppler Flowmetry and Ultrasonic Doppler Flowmetry were performed to determine the blood flow indices in the flaps.

The oscillatory axial velocity component along the duct was measured using ultrasonic Doppler velocimetry for different oscillation frequencies.

Ultrasonic Doppler velocimeter and ultrasonic transducer were used to measure the velocity signal of the liquid phase near the pipe, and the slug frequency was calculated accurately according to the change of velocity profile data.

The experimental study on flow characteristics of the turbulent falling film flowing along a vertical Perspex plate was carried out using ultrasonic Doppler velocimetry (UDV, a non-intrusive techni.

To simultaneously measure the water holdup and velocity, a combined electrical and ultrasonic Doppler measurement system based on a compact peripheral component interconnect (CPCI) bus is designed.

A method to estimate blood viscosity was proposed by reproducing the flow field of an analysis object in the feedback domain of ultrasonic Doppler velocity in a 2D-UMI blood flow analysis system, and evaluating the variation of the Doppler velocity caused by the analysis viscosity in the nonfeedback domain at the downstream side.

First International Symposium on Ultrasonic Doppler Methods for Fluid Mechanics and Fluid Engineering Paul Scherrer Institute, Villigen, Switzerland 9.

We measured the pulse wave of the cuff pressure, the radar sensor (both UWB and CW), the optical sensor, and ultrasonic Doppler as a reference.

In this study, the ultrasonic Doppler waveform was objectively analyzed and measured by the automated program, and it will help with the evaluation of fetal heart function.

It introduces a multi-modal, multi-domain deep learning framework to fuse the ultrasonic Doppler features and the audible speech spectrogram.