Incremental treatment planning

Patent metadata

Field	Value
Publication number	US-2016303398-A1
Application number	US-201315106097-A
Country	US
Kind code	A1
Filing date	Dec 20, 2013
Priority date	Dec 20, 2013
Publication date	Oct 20, 2016
Grant date	—

Abstract

A method for generating a radiotherapy treatment plan for a patient is provided. The treatment plan is optimized using an optimization objective which is at least partly based on an initially planned dose to the patient.

First claim

1 : A method for generating a radiotherapy treatment plan for a patient by optimizing treatment parameters on the basis of one or more optimization objectives, said method comprising, in a processor:
obtaining an initial treatment plan comprising an initial dose distribution; modifying the initial dose distribution for at least one region of the patient to obtain a modified dose distribution; and optimizing an objective function using the modified dose distribution as an optimization objective included in the objective function.

2 : The method according to claim 1 , wherein said initial radiotherapy treatment planning result comprises initially planned treatment parameters which are utilized as a starting point for generating the radiotherapy treatment plan.

3 : The method according to claim 1 , wherein one or more of said optimization objectives is at least partly based on a spatial dose distribution corresponding to said initially planned dose.

4 : The method according to claim 1 , wherein one or more of said optimization objectives is at least partly based on a dose volume histogram corresponding to said initially planned dose.

5 : The method according to claim 1 , wherein one or more of said optimization objectives is at least partly based on a characteristic dose fall-off corresponding to said initially planned dose.

6 : The method according to claim 1 , wherein one or more of said optimization objectives is an additional objective not based on said initially planned dose.

7 - 8 . (canceled)

9 : A computer program product comprising computer-readable instructions which, when executed on a computer, causes the computer to perform a method according to claim 1 .

10 : The computer program product according to claim 9 , configured for receiving user-input regarding an additional objective and/or a modification of said initially planned dose and defining one or more of said optimization objectives on the basis of said user-input.

11 : A computer system comprising a processor coupled to at least one memory having stored thereon a computer program comprising computer-readable instructions, said processor configured to, by executing said computer-readable instructions, perform a method according to claim 1 .

12 : The computer system according to claim 11 , wherein the system further comprises a data input device enabling a user to input data regarding an additional objective and/or a modification of said initially planned dose.

13 : The method according to claim 1 , wherein a user interactively applies one or more modifications to the initially planned dose distribution while monitoring the optimized dose distribution until a satisfactory result has been obtained.

14 : The method according to claim 13 , wherein the initial dose distribution is replaced with the current optimized dose distribution.

15 : The method according to claim 1 , wherein the optimization of treatment parameters involves optimizing machine parameters.

16 : The method according to claim 1 , wherein user-input regarding an additional objective and/or a modification of said initially planned dose is received from a user via a user-input interface and utilized for defining one or more of said optimization objectives.

Assignees

• Raysearch Lab Ab

Inventors

• Eriksson Kjell

Classifications

• A61N5/1031 Primary

  using a specific method of dose optimization · CPC title

• A61N2005/1035

  Simulated annealing · CPC title