US 11,850,089 B2
Intravascular imaging and guide catheter detection methods and systems
James G. Peterson, Yarmouth, ME (US); Christopher E. Griffin, Wilton, NH (US); and Sonal Ambwani, Westborough, MA (US)
Assigned to LightLab Imaging, Inc., Westford, MA (US)
Filed by LightLab Imaging, Inc., Westford, MA (US)
Filed on May 8, 2020, as Appl. No. 16/870,149.
Application 16/870,149 is a division of application No. 14/974,856, filed on Dec. 18, 2015, granted, now 10,646,198.
Claims priority of provisional application 62/257,662, filed on Nov. 19, 2015.
Prior Publication US 2020/0330070 A1, Oct. 22, 2020
Int. Cl. A61B 8/12 (2006.01); A61B 5/00 (2006.01); A61B 5/06 (2006.01); A61B 5/02 (2006.01); G06T 7/73 (2017.01); A61B 90/00 (2016.01)
CPC A61B 8/12 (2013.01) [A61B 5/0035 (2013.01); A61B 5/0066 (2013.01); A61B 5/0084 (2013.01); A61B 5/02007 (2013.01); A61B 5/061 (2013.01); A61B 5/6852 (2013.01); A61B 90/36 (2016.02); G06T 7/73 (2017.01); G06T 2207/10101 (2013.01); G06T 2207/30021 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of a detecting a guide catheter disposed in a lumen of a blood vessel the method comprising:
receiving, by one or more processors, intravascular data collected during a pullback of an intravascular imaging probe through the blood vessel, wherein the intravascular data comprises a plurality of frames;
on a per frame basis of the received intravascular data performing, by the one or more processors, a circle fit to determine a per frame diameter value of the lumen of the blood vessel;
identifying, by the one or more processors, one or more frames of the plurality of frames that includes guide catheter image data by identifying a deviation in one or more of the per frame diameter values of the lumen of the blood vessel;
excluding, by the one or more processors, the one or more frames of the plurality of frames that include the guide catheter image data from an intravascular data processing module; and
processing, by the one or more processors using the intravascular data processing module, the remaining frames of the plurality of frames.