In this paper, we introduce a novel full-duplex communication scheme that leverages the Doppler effect. By rotating the circular antenna array, the Doppler frequency shift is introduced into the ...

Duplex ultrasound is first-line imaging for all patients presenting with signs or ... For insulin-dependent diabetic patients, a 4-hour fast can be allowed. A high-resolution color Doppler ultrasound ...

The ultrasounds used during this procedure are: Traditional ultrasound – high-frequency sound waves create images of blood vessels, tissues and organs Doppler ultrasound – high-frequency sound waves ...

Doppler ultrasound – High-frequency sound waves determine the speed and direction ... and are actively involved in clinical research for vascular disease. A venous duplex is performed in the ...