US 12,239,847 B2
Hybrid trajectory and beam angle optimization for external beam radiation therapy
Santtu Ollila, Helsinki (FI)
Assigned to SIEMENS HEALTHINEERS INTERNATIONAL AG, Steinhausen (CH)
Filed by Siemens Healthineers International AG, Steinhausen (CH)
Filed on Sep. 8, 2023, as Appl. No. 18/243,703.
Application 18/243,703 is a division of application No. 17/870,286, filed on Jul. 21, 2022, granted, now 11,771,921.
Application 17/870,286 is a division of application No. 16/586,666, filed on Sep. 27, 2019, granted, now 11,439,842, issued on Sep. 13, 2022.
Claims priority of provisional application 62/738,741, filed on Sep. 28, 2018.
Prior Publication US 2024/0001146 A1, Jan. 4, 2024
Int. Cl. G06T 7/00 (2017.01); A61N 5/10 (2006.01)
CPC A61N 5/1031 (2013.01) [A61N 5/103 (2013.01); A61N 5/1037 (2013.01); A61N 5/1039 (2013.01); A61N 5/1045 (2013.01); A61N 5/1081 (2013.01); G06T 7/0012 (2013.01); A61N 2005/1034 (2013.01); G06T 2207/20072 (2013.01); G06T 2207/30004 (2013.01); G06T 2207/30241 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of determining treatment geometries for a radiotherapy treatment, the method comprising:
providing a patient model including one or more regions of interest (ROIs) for the radiotherapy treatment;
defining a delivery coordinate space (DCS) having a set of candidate vertices, each respective candidate vertex defining a respective beam's eye view (BEV) plane;
identifying a first energy mode and a second energy mode for the radiotherapy treatment;
for the first energy mode:
determining a first BEV region connectivity manifold by evaluating doses of the one or more ROIs for each respective BEV plane corresponding to each respective candidate vertex of the DCS using transport solutions for the first energy mode;
for the second energy mode:
determining a second BEV region connectivity manifold by evaluating doses of the one or more ROIs for each respective BEV plane corresponding to each respective candidate vertex of the DCS using transport solutions for the second energy mode;
determining a set of optimal treatment trajectories based on the first BEV region connectivity manifold and the second BEV region connectivity manifold; and
determining a set of intensity modulated radiation therapy (IMRT) fields, each respective IMRT field of the set of IMRT fields corresponding to a respective vertex in the delivery coordinate space.