公开(公告)号：US11554270B2

公开(公告)日：2023-01-17

申请号：US16645169

申请日：2018-06-12

Applicant: RaySearch Laboratories AB

Inventor： Björn Andersson ,  Björn Hårdemark ,  Rasmus Bokrantz

IPC: A61N5/10 ,  G16H20/40

Abstract: It is provided a method for optimizing a treatment plan for use in radiation therapy. The method is performed in a treatment planning system and comprises the steps of: obtaining a first quality function of the treatment plan, the first quality function yielding an output value based on an input treatment plan; obtaining a first pair of input values and a slope indicator, the input values associating a value of the first quality function to a value of a score; constructing a score function that maps values of the first quality function to values of the score by fitting a curve to the first pair of input values and the slope indicator; and optimizing the treatment plan with respect to the score function, by varying the treatment plan such that the value of the score function is either improved or constrained to a feasible range of score values.