A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 5/042 (2006.01) A61B 5/04 (2006.01) G06T 17/30 (2006.01) A61B 5/0408 (2006.01)
Patent
CA 2314278
A method of diagnosing an abnormal condition in a biological structure, such as the heart, including the steps of measuring a physiological response at at least three sampled points on a surface of the biological structure, calculating a vector function related to the response. displaying a representation of the vector function, and inferring the abnormal condition from the representation. The present invention is particularly useful for diagnosing cardiac arrhythmias, in which case the physiological response is a voltage, from which is inferred a local activation time and the vector function is a gradient of the local activation time, specifically, a conduction velocity.
Une méthode de diagnostic d'une condition anormale d'une structure biologique, tel un cour, comprend la mesure de la réaction physiologique à au moins trois points de la surface de la structure biologique, le calcul d'une fonction vectorielle relative à la réaction, l'affichage d'une image de la fonction vectorielle et la conclusion tirée de l'image quant à la condition anormale. La présente invention est particulièrement utile pour le diagnostic d'arythmies cardiaques, auquel cas la réponse physiologique revêt la forme d'un voltage qui permet d'établir un temps d'activation local dont la fonction vectorielle est une pente, plus précisément une vitesse de conduction.
Reisfeld Daniel
Biosense Inc.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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