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:
Dec. 06, 2011
Filed:
May. 12, 2009
Markus Kukuk, Palo Alto, CA (US);
Sandy Napel, Menlo Park, CA (US);
Markus Kukuk, Palo Alto, CA (US);
Sandy Napel, Menlo Park, CA (US);
Other;
Abstract
A system and method are disclosed for reconstructing an instrument in 3 dimensions for use during interventional medical procedures to provide enhanced instrument visualization with respect to a patient's vasculature. A patient vessel tree volume is co-registered with a live fluoroscopic image of a percutaneously-inserted instrument, such as a guidewire. The fluoroscopic image is segmented to eliminate images of surrounding tissue and to retain the guidewire image. The black pixels of the image are backprojected to the focal point of the x-ray source, through the co-registered vessel tree. The vessel tree is divided into segments that are scored based on proximity to the backprojected black pixels. Candidate instrument-containing vessel paths are identified based on the scores of the segments, and errant candidate vessel paths are eliminated to produce a refined list of candidate paths. Thresholding and visualization are performed to further refine the candidate vessel paths. 3D curve fitting is used to reconstruct an image of the instrument along with a 3D rendering of the final vessel path.