Planning the Irradiation of a Particle Beam While Taking into Consideration a Movement of a Target Volume

摘要

A method is disclosed for irradiation planning for the irradiation of a moving target volume located in a body with a particle beam irradiation facility by means of rescanning, which method has the steps of defining the target volume in a reference condition of the motion, dividing the target volume among a plurality of target points that can be individually approached with a particle beam, calculating a nominal dose to be deposited in each of the target points of the target volume, defining a number of rescanning passes in which each of the target points of the target volume are approached, calculating a mean motion to be expected of the target points of the target volume based on a motion model, taking into account the mean motion to be expected of the target points of the target volume in the irradiation planning in such a manner that the deviation of the expected dose deposition from the nominal dose for each target point is determined, and the nominal dose for each target point is corrected on the basis of the deviation, and generation of control parameters for the irradiation facility, wherein the control parameters comprise a particle count per target point and rescanning pass to be applied.

主权项

1. Method for irradiation planning for irradiation of a moving target volume located in a body with a particle beam irradiation facility by means of rescanning, having the following steps:
defining the target volume in a reference condition of the motion, dividinge the target volume among a plurality of target points that can be individually approached with a particle beam, defining a number of rescanning passes in which said target points of the target volume are approached, calculating a nominal dose for each of said target points to be deposited in said target points of the target volume, calculating a mean motion to be expected of the target points of the target volume based on a motion model, taking into account the mean motion to be expected of the target points of the target volume in the irradiation planning in such a manner that the deviation of the expected dose deposition from the nominal dose for each target point is determined, and the nominal dose for each target point is corrected on the basis of the deviation, and a corrected nominal dose is generated, generating control parameters for the irradiation facility, wherein the control parameters comprise a particle count per target point and rescanning pass to be applied.