US 12,239,849 B2
Checking quality of a treatment plan
Rickard Holmberg, Stockholm (SE)
Assigned to RaySearch Laboratories AB, Stockholm (SE)
Appl. No. 17/786,420
Filed by RaySearch Laboratories AB, Stockholm (SE)
PCT Filed Dec. 9, 2020, PCT No. PCT/EP2020/085227
§ 371(c)(1), (2) Date Jun. 16, 2022,
PCT Pub. No. WO2021/122203, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 19217514 (EP), filed on Dec. 18, 2019.
Prior Publication US 2023/0032956 A1, Feb. 2, 2023
Int. Cl. A61N 5/10 (2006.01)
CPC A61N 5/1038 (2013.01) [A61N 5/1071 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for checking quality of a treatment plan, wherein a treatment plan specifies a distribution of radiation to thereby provide radiation to a planning target volume, the method being performed by a quality assurance device and comprising the steps of:
obtaining a treatment plan and a corresponding first dose, the treatment plan having been calculated in a treatment planning system, the first dose being a predicted dose to be deposited in the patient using the treatment plan;
initiating a successive calculation of a secondary dose, being a dose deposited by the treatment plan, using a secondary dose calculation algorithm;
while the successive calculation of the secondary dose continues, repeatedly calculating a confidence interval of a comparative statistical measurement by comparing the first dose and the secondary dose over a defined geometric volume; and
interrupting the calculation of the secondary dose when the current confidence interval is better than at least one predefined criterion, in which case the treatment plan is considered to pass quality assurance.