US 12,376,813 B2
Method and device for monitoring a flow of a fluid in a vessel
Catalina Tobón Gómez, Haarlem (NL); Hua Ma, Rotterdam (NL); Johannes Petrus Janssen, Leiden (NL); Gianni Pedrizzetti, Florence (IT); Johan Hendrikus Christiaan Reiber, Rotterdam (NL); and Yves Robèrt Vijgeboom, Geleen (NL)
Assigned to QFR SOLUTIONS B.V., Leiden (NL)
Filed by Medis Associated B.V., Leiden (NL)
Filed on Nov. 3, 2022, as Appl. No. 17/980,108.
Claims priority of application No. 2029633 (NL), filed on Nov. 4, 2021.
Prior Publication US 2023/0135309 A1, May 4, 2023
Int. Cl. A61B 6/50 (2024.01); A61B 6/00 (2006.01)
CPC A61B 6/504 (2013.01) [A61B 6/481 (2013.01); G06T 2207/30101 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of monitoring a flow of a fluid in a vessel of a body of a living being, the method comprising:
obtaining a first image data set representing the vessel filled with a first fluid, the first image data set comprising at least one first image frame and the first fluid contrasting with matter surrounding the vessel;
obtaining a second image data set representing the vessel substantially void of the first fluid, the second image data set comprising at least one second image frame;
based on the first image data set and the second image set, estimating an estimated location of the vessel in the second image set; and
monitoring presence in the second image data set of contrasting image data at the estimated location of the vessel,
wherein:
the first image data set comprises a multitude of first image frames, the first image frames having been acquired consecutively in time; and
the second image data set comprises a multitude of second image frames, the second image frames having been acquired consecutively in time;
the method further comprising, over time;
tracking, in the first image data set, the vessel;
estimating, based on the tracking, a location of the vessel in the second frames of the second image data set, and
reconstructing the vessel geometry.