US 12,465,785 B2
Systems, methods and devices for automated target volume generation
Benjamin Haas, Brittnau (CH); Marco Lessard, Trois Rivieres (CA); Jonas Honegger, Zurich (CH); Thomas Coradi, Lenzburg (CH); Tobias Gass, Vogelsang AG (CH); and Tomasz Morgas, Henderson, NV (US)
Assigned to SIEMENS HEALTHINEERS INTERNATIONAL AG, Steinhausen (CH)
Filed by Siemens Healthineers International AG, Steinhausen (CH)
Filed on Mar. 13, 2023, as Appl. No. 18/120,501.
Application 18/120,501 is a division of application No. 17/146,775, filed on Jan. 12, 2021, granted, now 11,623,106.
Application 17/146,775 is a continuation of application No. 16/144,253, filed on Sep. 27, 2018, granted, now 10,918,885, issued on Feb. 16, 2021.
Prior Publication US 2023/0211179 A1, Jul. 6, 2023
Int. Cl. G06T 7/00 (2017.01); A61B 6/46 (2024.01); A61N 5/10 (2006.01); G06T 7/149 (2017.01); G06T 7/33 (2017.01); G06T 7/38 (2017.01); A61B 6/03 (2006.01); G06T 7/12 (2017.01)
CPC A61N 5/1031 (2013.01) [A61B 6/466 (2013.01); A61N 5/103 (2013.01); A61N 5/1049 (2013.01); G06T 7/0014 (2013.01); G06T 7/149 (2017.01); G06T 7/337 (2017.01); G06T 7/38 (2017.01); A61B 6/03 (2013.01); G06T 7/12 (2017.01); G06T 2207/10081 (2013.01); G06T 2207/30004 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for generating deformation vector fields (DVFs) that allow for automatic propagation of contours of structures from a first image that includes a first set of structures and a second set of structures to a second image that includes the second set of structures, comprising:
using image data of the first image and image data of the second image as input in a deformable registration algorithm; and
computing the deformable registration algorithm through a plurality of computation steps that optimize similarity measures between the first image and the second image,
wherein the plurality of computation steps includes:
comparing and spatially registering the first image with the second image to obtain a plurality of vectors that map voxels of each prescribed location in the first image to a location in the second image;
aggregating the plurality of vectors into a first deformation map;
constraining the first deformation map to force points in the second set of structures of the first image to match with points in the second set of structures of the second image; and
mapping of the image data of the first image to the image data of the second image to obtain the deformation vector fields (DVFs).