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 ...

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 ...

Here are a serie of Python scripts I developed in order to process spectra in the standard fits format, with the aim to test and apply the algoritm of spectral disentangling based in the algoritm ...

The Doppler circuitry determines the change in frequency and, this may only be translated into a blood velocity if the insonation angle is recorded and is included in the calculation. Nevertheless, ...

You will be able to get a quick price and instant permission to reuse the content in many different ways. Echocardiography when combined with spectral and colour flow Doppler is well established as a ...

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 ...

The method adapts the separation of the points according to the spectral resolution of the instrument, the typical broadening of the spectral shape, and the typical Doppler velocities. The experiments ...

For insulin-dependent diabetic patients, a 4-hour fast can be allowed. A high-resolution color Doppler ultrasound system allows for real-time assessment of the abdominal veins with both B-mode and ...