primustel.es Background: There is evidence that new portable echocardiographic devices are useful in evaluating heart anatomy and function, but a lack of Doppler modes has up to now been an important ...

Background Inflammatory activity may be quantified using Spectral Doppler (sD), which detects power Doppler (PD) signal through the internal resistance index (RI) in microcirculation 1,2. Objectives ...

Abstract: The theory of broadening and shift of the spectral lines including the statistical dependence of Doppler and impact broadenings is developed. One of the results of this theory is the ...

Abstract: Empirical investigations show that at low and moderate signal-to-noise ratios, maximum entropy (ME) Doppler shift and spectral width estimates of VHF radar signals have significantly higher ...

A high-resolution color Doppler ultrasound system allows for real-time assessment of the abdominal veins with both B-mode and spectral Doppler analysis. This must include adjustable range-gated ...

Nevertheless, all newer equipment report blood velocities (both in spectral Doppler and on the colour bar) assuming that the Doppler angle is zero. This is, however, more often wrong than right and we ...

Echocardiography when combined with spectral and colour flow Doppler is well established as a safe, non-invasive, and versatile diagnostic modality in cardiology, and is now the predominant technique ...

and spectral efficiency with and without sectorization. Homework 2: Problems on path loss and effect of log-normal shadowing, computation of delay spread, and computation of fade statistics and ...

higher-order spectral analysis (HOSA) techniques have been applied to weather signals to better understand their statistical properties. This approach allows for the characterization of Doppler ...

The center of gravity (COG) method can be used to derive the Doppler shifts of purely absorption (photospheric lines [21]) or purely emission lines. When there are multi-velocity components in a ...