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. 21, 2021
Filed:
Nov. 12, 2015
Applicant:
Sunnybrook Research Institute, Toronto, CA;
Inventor:
Charles Cunningham, Toronto, CA;
Assignee:
SUNNYBROOK RESEARCH INSTITUTE, Toronto, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 33/28 (2006.01); A61B 5/055 (2006.01); A61B 5/06 (2006.01); G01R 33/56 (2006.01); A61B 5/00 (2006.01); A61B 90/30 (2016.01); A61B 90/00 (2016.01);
U.S. Cl.
CPC ...
G01R 33/286 (2013.01); A61B 5/055 (2013.01); A61B 5/065 (2013.01); G01R 33/5608 (2013.01); A61B 5/7292 (2013.01); A61B 2090/306 (2016.02); A61B 2090/3954 (2016.02);
Abstract
Described here are systems and methods for using a laser-induced demagnetization of magnetic particles disbursed in a tracking marker to generate variable susceptibility effects that can be imaged with magnetic resonance imaging ('MRI'). As one example, laser power is delivered to nickel particles using fiber optics. This demagnetization effect can be used in rapid tracking of interventional devices by subtracting the two images acquired when the laser is off and on.