Lower extremity venous duplex examinations are performed with a linear array transducer using frequencies of 9 to 12 MHz. These exams require evaluation with grayscale, color flow, and pulsed-wave ...

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

Duplex ultrasound is first-line imaging for all patients ... The spectral Doppler sample volume is set to the size of the vein lumen, and Doppler angles for velocity measurements must be ≤ 60°. It is ...

Venous congestion can be measured by Doppler ultrasound at the bedside through interrogation of the inferior vena cava (IVC), hepatic vein (HV), portal vein (PV) and intrarenal veins (IRV). The ...

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 ...

This can lead to problems that include varicose veins. Your doctor can diagnose venous insufficiency by examining your legs and by using a type of ultrasound test (duplex Doppler) to find out how well ...

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

Your doctor may also order a venous duplex ultrasound, which uses high frequency sound waves to check the blood flow in your legs and to help determine a treatment. Venous ulcers can be difficult to ...

A novel deep learning model has been developed to classify the Venous Gas Emboli (VGE) grade in Doppler ultrasound audio recordings. To date, this is the first attempt to incorporate deep learning ...