US 11,938,341 B2
Method and apparatus for fast influence matrix generation
Petri Hirvonen, Espoo (FI); Matti Ropo, Helsinki (FI); Douglas Barnett, Palo Alto, CA (US); and Timo Koponen, Helsinki (FI)
Assigned to Siemens Healthineers International AG, Steinhausen (CH)
Filed by Siemens Healthineers International AG, Steinhausen (CH)
Filed on Dec. 20, 2021, as Appl. No. 17/555,756.
Prior Publication US 2023/0191150 A1, Jun. 22, 2023
Int. Cl. A61N 5/10 (2006.01)
CPC A61N 5/1031 (2013.01) [A61N 5/1028 (2013.01); A61N 2005/1034 (2013.01); A61N 2005/1087 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method comprising:
by a control circuit:
generating an influence matrix via integration with a Monte Carlo particle transport simulation by generating the influence matrix via integration with a Monte Carlo particle transport simulation on a particle-by-particle basis by, for each of the particles:
identifying a spot to which the particle belongs; and
adding a dose deposited by the particle during transport to an influence matrix element that corresponds to a spot to which the particle belongs and a voxel where the dose was deposited;
optimizing a radiation treatment plan for proton therapy as a function of the influence matrix.