US 12,322,045 B2
Methods and systems for cardiac chamber imaging
Frank Michael Weber, Norderstedt (DE); Jochen Peters, Norderstedt (DE); Irina Waechter-Stehle, Hamburg (DE); Arne Ewald, Hamburg (DE); Matthias Lenga, Mainz (DE); André Goossen, Eldena (DE); Sebastian Wild, Hamburg (DE); and Tobias Wissel, Lübeck (DE)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 17/799,968
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Feb. 2, 2021, PCT No. PCT/EP2021/052427
§ 371(c)(1), (2) Date Aug. 16, 2022,
PCT Pub. No. WO2021/165033, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 20157641 (EP), filed on Feb. 17, 2020.
Prior Publication US 2023/0061953 A1, Mar. 2, 2023
Int. Cl. G06T 17/20 (2006.01); G06T 7/00 (2017.01); G06T 7/149 (2017.01)
CPC G06T 17/205 (2013.01) [G06T 7/0012 (2013.01); G06T 7/149 (2017.01); G06T 2207/10136 (2013.01); G06T 2207/30048 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for refining a mapped surface mesh of a cardiac chamber,
the method comprising:
obtaining a mapped surface mesh of the cardiac chamber anatomy, wherein the mapped surface mesh comprises a central region representing a cardiac chamber and an outer region representing a peripheral cardiac structure connected to the cardiac chamber, and wherein the mapped surface mesh comprises a first view of an anatomical landmark within the cardiac chamber, and wherein the mapped surface mesh is obtained by way of electrophysiological mapping;
obtaining image data of a cardiac chamber anatomy of a subject, wherein the image data comprises data selected from intra-cardiac echo data, trans-esophageal echo data, trans-thoracic echo data or three-dimensional (3D) x-ray angiography data;
deforming the central region of the mapped surface mesh based on a first segmentation algorithm configured according to one or more predetermined shape-constraints;
deforming the outer region of the mapped surface mesh based on a second segmentation algorithm configured according to the image data, thereby generating a deformed outer region; and
combining the deformed central region and the deformed outer region, thereby generating a refined mapped surface mesh,
wherein deforming the central region of the mapped surface mesh based on the first segmentation algorithm configured according to one or more predetermined shape-constraints comprises:
deforming a mean mesh model based on the central region of the mapped surface mesh, thereby generating a first deformed mean mesh model;
deforming the first deformed mean mesh model based on the image data of the cardiac chamber anatomy, thereby generating an adapted mesh model; and
deforming the central region of the mapped surface mesh based on the deformation applied to the first deformed mean mesh model, thereby generating a deformed central region.