US 12,336,766 B2
System and method of fluid passageway cross-sectional area determination in an anatomy
Lotte Huysmans, Leuven (BE); Julie Maes, Leuven (BE); and Janelle Schrot, Plymouth, MI (US)
Assigned to MATERIALISE N.V., Leuven (BE)
Filed by Materialise N.V., Leuven (BE)
Filed on Apr. 2, 2024, as Appl. No. 18/624,977.
Application 18/624,977 is a continuation of application No. 17/452,382, filed on Oct. 26, 2021, granted, now 11,969,219.
Application 17/452,382 is a continuation of application No. PCT/US2020/030557, filed on Apr. 29, 2020.
Claims priority of provisional application 62/841,651, filed on May 1, 2019.
Prior Publication US 2024/0245464 A1, Jul. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 34/10 (2016.01); G06T 17/00 (2006.01); G06T 19/20 (2011.01)
CPC A61B 34/10 (2016.02) [G06T 17/00 (2013.01); G06T 19/20 (2013.01); A61B 2034/104 (2016.02); A61B 2034/105 (2016.02); G06T 2219/2004 (2013.01); G06T 2219/2016 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A computer-implemented method of determining information regarding cross-sectional areas of a passageway of anatomy for fluid flow, the method comprising:
obtaining one or more images of the passageway;
placing at least a portion of a representation of a prosthetic device in the one or more images of the passageway at a position;
determining a starting plane that intersects at least a point of a surface of the representation of the prosthetic device at the position, at least a point in a volume defined by the passageway, and at least a point on a boundary of the passageway in the one or more images of the passageway;
creating a plurality of section planes based on rotating the starting plane one or more times about one or more axes;
calculating a plurality of cross-sectional areas corresponding to the plurality of section planes, wherein calculating each corresponding cross-sectional area of the plurality of cross-sectional areas comprises:
subtracting 1) a first corresponding intersection of the at least the portion of the representation of the prosthetic device at the position and a corresponding section plane from 2) a second corresponding intersection of the volume and the corresponding section plane to obtain a resulting corresponding cross section; and
calculating a surface area of the resulting corresponding cross section as the corresponding cross-sectional area;
determining one of a maximum or minimum cross-sectional area of the plurality of cross-sectional areas;
comparing the one of the maximum or the minimum cross-sectional area to a threshold; and
selectively changing a prosthetic device corresponding to the representation of the prosthetic device based on the comparison.