Synthetic structural imaging and volume estimation of...

A - Human Necessities – 61 – B

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A61B 8/00 (2006.01) A61B 8/08 (2006.01) G01V 3/12 (2006.01)

Patent

CA 2338735

A system (10) having a processor, a memory, generates low frequency ultrasound signals to be applied to tissue (14) to generate a weighted sum of tissue ramp, step, and impulse signatures. The system (10) analyzes the tissue signatures to determine the low frequency target profile which is used to generate a graphic representation of the tissue as well as to estimate the volume of the tissue; to classify the tissue (14) as to type, and condition of the tissue using a set of stored tissue data. The classifier may include a neural network (34), and/or a nearest neighbor rule processor (36). The system (10) performs as a non-invasive acoustic measurement, an imaging system, and method which uses Synthetic Structural Imaging (SSI) techniques to provide unique information concerning the size, shape of biological structures for classification, visualization of normal, abnormal tissues, organs, biological structures, etc.

Un système (10) doté d'un processeur et d'une mémoire, génère des signaux ultrasonores basse fréquence destinés à être appliqués sur un tissu (14) de sorte qu'une somme pondérée des signatures de rampe, d'échelon et d'impulsion soit générée. Le système (10) analyse les signatures du tissu pour déterminer le profil cible basse fréquence utilisé pour générer une représentation graphique du tissu et pour estimer son volume ; pour classifier le tissu (14) selon son type et son état, au moyen d'un ensemble de données relatives au tissu. L'unité de classement peut comporter un réseau neuronal (34), et/ou un processeur de règles du plus proche voisin (36). Le système (10) fonctionne comme un système et un procédé de mesure acoustique et d'imagerie non invasif, dans lesquels des techniques d'imagerie structurale synthétique (SSI) sont utilisées pour la production d'informations concernant la taille, la forme de structures biologiques, permettant la classification et la visualisation, entre autres, de tissus, organes, structures biologiques normales et anormales.

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