Results 161 to 170 of about 1,922,963 (250)

Carotid Doppler Imaging as a Marker for Fluid Responsiveness. [PDF]

J Clin Med
Srivastava A, Tam C, Sethi S, Gaudino M, Rippon B, Baidya J, Rastogi S, Lopes A, Kasubhai A, Pryor K, Osorio J.   +10 more
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Comparison of pulse subtraction doppler and pulse inversion doppler

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2009
In this paper, a new Doppler technique based on pulse subtraction imaging (PSD) is described and compared with pulse inversion Doppler (PID). Combining a nonlinear contrast agent imaging technique with a Doppler process provides a tool for detecting motion of both contrast agents and tissues.
Mahue, Veronique, Mari, Jean Martial, Eckersley, Robert, Tang, Meng-Xing   +3 more
openaire   +3 more sources

Performance Analysis of the Classic and Robust Chinese Remainder Theorems in Pulsed Doppler Radars

IEEE Transactions on Signal Processing, 2018
In pulsed Doppler radars, subsampling causes incorrect estimates of the radial velocity of the detected targets whenever its related Doppler frequency is greater than the pulse repetition frequency of the radar. The classic Chinese remainder theorem is a
Bruno Silva, G. Fraidenraich
semanticscholar   +1 more source

Pulsed doppler fetal echocardiography

Journal of Clinical Ultrasound, 1985
AbstractPulsed Doppler echocardiography (PDE) has proven value in the examination of the infant or child with known or suspected congenital heart disease. In order to assess how PDE might be useful in the evaluation of the infant in utero, we reviewed our experience with this technique used in combination with both cross‐sectional and M‐mode ...
J C, Huhta, J F, Strasburger, R J, Carpenter, A, Reiter, E, Abinader   +4 more
openaire   +2 more sources

An infinite gate pulse doppler

Ultrasound in Medicine & Biology, 1981
Abstract A new type of pulse-Doppler is described and results illustrating in vivo operation presented. The system uses a phase detection principle to produce an output proportional to the velocity of moving structures continously as a function of depth into the tissue, similar to an A -mode display.
A, Nowicki, J, Reid
openaire   +2 more sources

Optimizing a pulsed Doppler lidar

Applied Optics, 1990
NOAA's fieldable injection-seeded, pulsed, coherent CO(2) lidar was developed over a 5-yr period. Its performance and reliability are characterized. Techniques for calibration, alignment, collimation, and for improving detector performance and frequency stability are presented.
M J, Post, R E, Cupp
openaire   +2 more sources

Auditory Pulsed Doppler Discrimination

The Journal of the Acoustical Society of America, 1968
Detection and relative discrimination thresholds were determined for auditory pulsed Doppler sequences. Doppler thresholds rival the extremely acute interval, or pitch, thresholds of the ear. Doppler threshold changes of less than 1 μsec/interval are readily obtained.
openaire   +2 more sources