US 12,226,256 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, Hopkinton, MA (US)
Assigned to LightLab Imaging, Inc., Westford, MA (US)
Filed by LightLab Imaging, Inc., Westford, MA (US)
Filed on Oct. 5, 2023, as Appl. No. 18/376,879.
Application 18/376,879 is a division of application No. 16/870,149, filed on May 8, 2020, granted, now 11,850,089.
Application 16/870,149 is a division of application No. 14/974,856, filed on Dec. 18, 2015, granted, now 10,646,198, issued on May 12, 2020.
Claims priority of provisional application 62/257,662, filed on Nov. 19, 2015.
Prior Publication US 2024/0032894 A1, Feb. 1, 2024
Int. Cl. A61B 8/12 (2006.01); A61B 5/00 (2006.01); A61B 5/02 (2006.01); A61B 5/06 (2006.01); A61B 90/00 (2016.01); G06T 7/73 (2017.01)
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)] 18 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 of the blood vessel collected during a pullback of an intravascular imaging device through the blood vessel, wherein the intravascular data comprises a plurality of frames having corresponding frame numbers;
determining, by the one or more processors based on the intravascular data, a plurality of measured diameter values of the lumen of the blood vessel on a per frame basis;
detecting, by the one or more processors, from the plurality of frames, adjacent frames that have a deviation in the diameter values of the lumen of the blood vessel;
identifying, by the one or more processors, a frame from the detected adjacent frames having a higher frame number as a guide catheter containing frame;
excluding, by the one or more processors, the identified guide catheter containing frame from the plurality of frames received by 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.