Patent ID: 8772742
Filing Date: 2014-07-08
Classification: A61N

Abstract:
1. A method for adapting an irradiation field for a radiation treatment procedure on a target volume that is irradiated with a particle beam by scanning a particle beam point by point over the target volume, a position of the target volume, a shape of the target volume, or the position and the shape of the target volume being changeable over time, the method comprising: obtaining a three-dimensional (3D) planning image data set and the irradiation field, which have been planned by the association of doses to be applied successively with volume elements of the target volume on the basis of the 3D planning image data set, obtaining a 3D radiation treatment data set in a radiation treatment phase, the 3D radiation treatment data set reproducing the target volume to be irradiated, registering the target volume in the 3D planning image data set and the 3D radiation treatment data set to obtain a transformation that describes a change in position, shape, or position and shape of the target volume, and adapting, as a function of the transformation, the irradiation field from the planning to the target volume in the radiation treatment phase, wherein a three-dimensional position of the doses to be successively applied is transformed as a function of the transformation.