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:
Mar. 05, 1996
Filed:
Jan. 27, 1995
Applicant:
Inventors:
Robert W Stadler, Cambridge, MA (US);
W Clem Karl, Cambridge, MA (US);
Robert S Lees, Brookline, MA (US);
Assignee:
Boston Heart Foundation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
12866007 ; 128661100 ;
Abstract
An improved apparatus and method for measuring the diameter of an artery utilizes an ultrasonic imaging plane that is rotated slightly from the centerline of an artery to produce a 'skew' image of the artery. The invention detects edge points on the image of near and far walls of the artery. It fits curves to the near and far end edge points and measures distances between the curves. Alternatively, it fits one curve to all the edge points and measures a parameter (such as minor diameter of an ellipse) of the curve. Finally, it estimates arterial diameter from the measurement.