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US 2023/0141197 A1Published application
Computer-implemented method for radiotherapy treatment planning, computer program product and computer system for performing the method
AssigneeRaySearch Laboratories AB
InventorsBjorn ANDERSSON, Erik ENGWALL, Albin FREDRIKSSON, Kjell ERIKSSON
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Abstract
A computer-based method of optimizing a radiotherapy treatment plan for a patient is proposed, wherein a treatment plan to be provided by one radiation set is optimized taking into account a previously delivered dose delivered by a different radiation set. One of the radiation sets is external beam radiotherapy and the other is brachytherapy.
Claims12
A computer-based method of optimizing a radiotherapy treatment plan for delivering radiotherapy to a patient by means of a second radiation set, comprising the steps of
- a) determining, based on at least a first medical image of the patient, a dose previously delivered to the patient by means of a first radiation set,
- b) obtaining a first optimization problem comprising an optimization function designed to optimize the dose distribution resulting from the second radiation set in dependence of dose criteria set for a total dose and of the previously delivered dose, the total dose being the dose resulting from the second radiation set and the previously delivered radiation set,
- c) optimizing the treatment plan for delivering radiotherapy by the second radiation set by means of the optimization problem, wherein the optimization function is an objective function or a constraint and one of the first and the second radiation set is brachytherapy and the other is external beam radiation therapy.
Dependencies are inferred from the claim text.