نتایج جستجو برای: ultrasonic doppler velocimeter

تعداد نتایج: 73492  

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 1979

Journal: :The Journal of the Acoustical Society of America 2010
Asif Mehmood James M Sabatier Marshall Bradley Alexander Ekimov

The focus of this paper is to experimentally extract the Doppler signatures of a walking human's individual body segments using an ultrasonic Doppler system (UDS) operating at 40 kHz. In a human's walk, the major contribution to Doppler velocities and acoustic scattering is from the foot, lower leg, thigh (upper leg) and torso. The Doppler signature of these human body segments are extracted ex...

2012
René M. Werkmeister Stefan Palkovits Reinhard Told Martin Gröschl Rainer A. Leitgeb Gerhard Garhöfer Leopold Schmetterer

PURPOSE There is a long-standing interest in the study of retinal blood flow in humans. In the recent years techniques have been established to measure retinal perfusion based on optical coherence tomography (OCT). In the present study we used a technique called dual-beam bidirectional Doppler Fourier-domain optical coherence tomography (FD-OCT) to characterize the effects of 100% oxygen breath...

Journal: :American journal of physiology. Heart and circulatory physiology 2011
Craig J Hartley Anilkumar K Reddy Sridhar Madala Mark L Entman Lloyd H Michael George E Taffet

With the growth of genetic engineering, mice have become increasingly common as models of human diseases, and this has stimulated the development of techniques to assess the murine cardiovascular system. Our group has developed nonimaging and dedicated Doppler techniques for measuring blood velocity in the large and small peripheral arteries of anesthetized mice. We translated technology origin...

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