US 11,990,225 B2
Systems and methods for reconstruction of medical images
Haim Rodriguez, Tel-Mond (IL)
Assigned to Navix International Limited, Road Town (VG)
Appl. No. 17/256,024
Filed by Navix International Limited, Tortola (VG)
PCT Filed Jul. 1, 2019, PCT No. PCT/IB2019/055567
§ 371(c)(1), (2) Date Dec. 24, 2020,
PCT Pub. No. WO2020/008326, PCT Pub. Date Jan. 9, 2020.
Claims priority of provisional application 62/693,919, filed on Jul. 4, 2018.
Prior Publication US 2021/0174940 A1, Jun. 10, 2021
Int. Cl. G16H 30/40 (2018.01); A61B 5/06 (2006.01); G06T 17/20 (2006.01)
CPC G16H 30/40 (2018.01) [A61B 5/065 (2013.01); G06T 17/20 (2013.01); A61B 2576/023 (2013.01); G06T 2210/41 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A computer implemented method of reconstructing an image of a body cavity shape of a subject based on a point cloud, each point representing a location visited by an intra-body probe, the point cloud having an inner region wherein the points are sparser than outside said inner region of the point cloud, the method comprising:
uniformly sampling the points in the point cloud;
identifying the inner region;
after said uniformly sampling, adding points to the inner region of the cloud to emulate additional visits of the intrabody probe in said inner region; and
reconstructing the image of the body cavity shape from the point cloud after the adding;
wherein said reconstructing is based on a contour function generated by:
computing a point density function (PDF) based on the uniformly sampled point cloud, and
computing the contour function by subtracting a predetermined threshold from the computed PDF.