نتایج جستجو برای: pulsed doppler
تعداد نتایج: 79392 فیلتر نتایج به سال:
Objective- The aim of this study was to test the repeatability, the variability, and to establish the reference values of PW measurements in healthy Markhoz goats.Design- Retrospective study.Animals- 20 female Markhoz goats.Procedure- Using a standardized PW Doppler echocardiographic protocol, 20healthy adult unsedated female Markhoz goats were investigated three times at one-...
OBJECTIVE Evaluate the effect of chronic smoking on peak systolic velocity (PSV) of the superior mesenteric artery, evaluated with pulsed Doppler, determining whether the longer the snuff consumption, the greater the increase in PSV. MATERIAL AND METHODS This is an analytical cross-sectional study where patients who came to perform abdominal Doppler and had a history of chronic smoking were i...
Influence of sampling site and flow area on cardiac output measurements by Doppler echocardiography.
In 40 patients cardiac output was simultaneously determined by pulsed Doppler echocardiography and thermodilution (range 4.0 to 10.2 liters/min). The sample volume was located in the center of the mitral anulus, at the tips of the mitral leaflets and in the center of the aortic anulus. Circular cross-sectional areas of the mitral anulus, aortic anulus and aortic bulbus were calculated from M-mo...
We developed a 1.5 μm eye-safe wavelength high-gain and high-average power laser amplifier using an Er,Yb:glass planar waveguide for coherent Doppler LIDAR. Applying the planar waveguide structure, high-average output power with near single transverse mode was realized. Consequently, high-gain and high-efficient operation were achieved by multi-bounce optical path configuration. Amplifying the ...
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