Journal ArticleDOI
Time domain formulation of pulse-Doppler ultrasound and blood velocity estimation by cross correlation.
O. Bonnefous,P. Pesqué +1 more
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TLDR
A new formulation is presented which describes the pulse-Doppler effect on the successive echoes from a cloud of moving targets as a progressive translation in time due to the displacement of the scatterers between two excitations.About:
This article is published in Ultrasonic Imaging.The article was published on 1986-04-01. It has received 406 citations till now. The article focuses on the topics: Time domain & Doppler effect.read more
Citations
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Elastography: A Quantitative Method for Imaging the Elasticity of Biological Tissues
TL;DR: Initial results of several phantom and excised animal tissue experiments are reported which demonstrate the ability of this technique to quantitatively image strain and elastic modulus distributions with good resolution, sensitivity and with diminished speckle.
Patent
Transducer array imaging system
TL;DR: In this article, the authors consider methods and devices for communicating an acoustic emission via an array of transducers and wirelessly communicating data via a transceiver, where the transceiver may be in communication with the array of Transducers.
Journal ArticleDOI
Synthetic Aperture Ultrasound Imaging
TL;DR: The paper describes the use of synthetic aperture (SA) imaging in medical ultrasound, where data is acquired simultaneously from all directions over a number of emissions, and the full image can be reconstructed from this data.
Journal ArticleDOI
A fundamental limit on delay estimation using partially correlated speckle signals
TL;DR: In this paper, the authors apply the Cramer-Rao Lower Bound to derive an analytical expression which predicts the magnitude of jitter errors incurred when estimating delays using radio frequency (RF) data from speckle targets.
Journal ArticleDOI
Functional ultrasound imaging of the brain.
TL;DR: FUS identifies regions of brain activation and was used to image whisker-evoked cortical and thalamic responses and the propagation of epileptiform seizures in the rat brain.
References
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Journal ArticleDOI
The generalized correlation method for estimation of time delay
TL;DR: In this paper, a maximum likelihood estimator is developed for determining time delay between signals received at two spatially separated sensors in the presence of uncorrelated noise, where the role of the prefilters is to accentuate the signal passed to the correlator at frequencies for which the signal-to-noise (S/N) ratio is highest and suppress the noise power.
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Real-Time Two-Dimensional Blood Flow Imaging Using an Autocorrelation Technique
TL;DR: In this paper, a new blood row imaging system is described that com- bines a conventional pulsed Doppler device and a newly developed AU-to-correlator, in which the direction of blood Row and its variance are expressed by means of a difference in color and its hue, respectively.
Real-Time Two-Dimensional Blood Flow Imaging Using an Autocorrelation Technique
TL;DR: In the system blood flow within a given cross section of a live organ is displayed in real time and the direction of blood Row and its variance are expressed by means of a difference in color and its hue, respectively.
Journal ArticleDOI
Ultrasonic Doppler Method for the Inspection of Cardiac Functions
TL;DR: In this article, the authors developed a method for the inspection of cardiac functions by recording these Doppler signals simultaneously with the electro-cardiograph and phonocardiograph, which made it possible not only to obtain direct informations for the valvular movement which could not have been ascertained up to present, but also to examine the transitional aspects of the myocardial excitation which is utterly uudetectable by the electrocardiography alone.