Device and method for improved quantitative coronary artery...

A - Human Necessities – 61 – B

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A61B 6/00 (2006.01) A61B 5/107 (2006.01)

Patent

CA 2230032

The present invention is generally directed to one or more devices, and a method for improving quantitative coronary artery analysis. The devices which may be used with the present invention include an improved angiographic image quality phantom (30), an improved arterial phantom (34), and the initial imaging of the procedure catheter (38). One or all of these devices may be used to increase the accuracy and quality of the arterial measurements provided by an edge detection analysis program. The method includes the initial imaging of the image quality phantom (30) to allow for the correction of various geometric distortions present in an imaging system. Next, the tip of the procedure catheter (38) and the arterial phantom (34) are imaged to create an improved regression curve for the imaging system, and to allow for increased accuracy in the use of the procedure catheter as a basis for the determination of the calculated artery diameters.

La présente invention concerne un ou plusieurs dispositifs ainsi qu'une méthode permettant d'améliorer la qualité de l'analyse quantitative de l'artère coronaire. Les dispositifs pouvant s'utiliser dans le cadre de la présente invention incluent un fantôme (30) de la qualité d'une image angiographique améliorée, un fantôme artériel amélioré (34) et une imagerie initiale améliorée du cathéter (38) d'intervention. On utilise la totalité des dispositifs ou l'un d'entre eux pour augmenter la précision et améliorer la qualité des mesures de l'artère fournies par un programme d'analyse de détection des bords. La méthode comprend l'imagerie initiale du fantôme (30) de la qualité de l'image, qui permet de corriger diverses distorsions géométriques présentes dans un système d'imagerie. A l'étape suivante, on procède à la formation d'images de la pointe du cathéter (38) d'intervention et du fantôme artériel (34) pour créer une courbe de régression améliorée, destinée au système d'imagerie, et pour rendre plus précise l'utilisation du cathéter d'intervention, qui sert de base pour déterminer les diamètres calculés de l'artère.

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