The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 01, 1999
Filed:
Jun. 18, 1997
Michelle Tamara LeFree, Ann Arbor, MI (US);
Joseph Sitomer, Ann Arbor, MI (US);
Quinton Instrument Company, Bothell, WA (US);
Abstract
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, an improved arterial phantom and the initial imaging of the procedure catheter. 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 to allow for the correction of various geometric distortions present in an imaging system. Next, the tip of the procedure catheter and the arterial phantom are imaged to create an improved regression curve for the imaging system an to allow for increased accuracy in the use of the procedure catheter as a basis for the determination of the calculated artery diameters.