Radiation therapy system and method for adaptation of an irradiation field for an irradiating operation of a surface to be irradiated target volume of a patient

摘要

A process for the adaptation of an irradiation field for an irradiating operation of a target volume of a patient to be irradiated with a particle beam with the aid of the scanning - art is irradiated, in which a particle beam is scanned point by point over the target volume,wherein the target volume its position and / or shape in the patient can change with time, with the following method features:– Providing a 3d - planning image data set, and of an irradiation field in a planning phase by assigning doses to be applied in succession with volume elements of the target volume with the aid of the 3d - planning image data set were planned,– Obtaining a 3d - irradiation data set, in which the target volume is imaged in an irradiation stage following,– Registering of the target volume in the 3d - planning image data set and in the 3d - irradiation data set by means of obtaining a corresponding transformation, which a position - and / or shape of the target volume describes,– Adaptation of the irradiation field from the planning phase by means of the transformation to the position - and / or shape of the target volume in the irradiation stage following, in that a spatial position of the successively doses to be applied by the transformation..