Systems and methods for adapting a movement model based on an image
AssigneeVarian Medical Systems International AG
InventorsJanne Ilmari Nord, Jarkko Yrjänä Peltola
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Abstract
Various embodiments of the invention include systems and methods for adapting a movement model based on an image captured during radiation treatment of a patient. The movement model may, for example, be used in radiotherapy to treat lung cancer. The movement model is typically based on a series of images of a patient captured over a period of time. The movement model and/or one or images included therein may be used to generate a reference image of the patient. The reference image is compared with an image of the patient optionally captured during treatment. The result of this comparison is used to adapt the movement model to conditions during the treatment.
Claims32
A method comprising;
- receiving a movement model based on movement of a first patient;
- generating a reference image based on the movement model associated with the first patient;
- generating an image of a second patient during a treatment session;
- comparing the reference image and the treatment image to generate a model adaptation field;
- and
- using the model adaptation field to adapt the movement model for treatment of the second patient.
A system comprising:
- a simulation module configured to generate a first image based on a movement model;
- a model deformation field module configured to receive a second image and generate a model adaptation field representative of differences between the first image and the second image, the second image being captured during a treatment session;
- and
- an adaptation module configured to adapt the movement model using the model adaptation field;
- wherein the movement model is based on movement of a first patient and the second image is representative of a position of a second patient.
Dependencies are inferred from the claim text.