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We present a new wavelet-based strategy for autonomous feature extraction and segmentation of cardiac structures in dynamic ultrasound images. Image sequences subjected to a multidimensional (2D plus time) wavelet transform yield a large number of individu ...
We present a new framework to estimate and visualize heart motion from echocardiograms. For velocity estimation, we have developed a novel multiresolution optical flow algorithm. In order to account for typical heart motions like contraction/expansion and ...
A method is presented for detg. the size distribution of spheres dispersed in a continuous phase by anal. of pulsed ultrasound signals reflected from members of the dispersion. Its theor. basis is developed for spherical bubbles and extended to nonspherica ...
An ultrasound pulse transmission technique was studied as an alternative means of measuring the specific interfacial area (a) in gas-liq. reactors. Characterization of gas-liq. dispersions using ultrasound can be a very valuable alternative in situations i ...
The ultrasound pulse transmission or echo technique is described for measuring the sp. interfacial area, bubble size, gas hold up, and no. of bubbles per unit vol. in gas-liq. dispersion. Expts. on the application of the method to simulated and real fermns ...
The invention relates to an improved process for the production of powders of an inhalable medicament by crystallization from a supersaturated fluid containing said medicament, the method comprising passing along a tubular reactor(a) a segmented flow of th ...
We propose a new global registration method for estimating the cardiac displacement field in 2D sequences of ultrasound images of the heart. The basic idea is to select a reference frame (e.g., the first image of a cycle) and to map each image in the seque ...
We present an algorithm for fast elastic multidimensional intensity-based image registration with a parametric model of the deformation. It is fully automatic in its default mode of operation. In the case of hard real-world problems, it is capable of accep ...