PLANNING THE IRRADIATION OF A PARTICLE BEAM WHILE TAKING INTO CONSIDERATION A MOVEMENT OF A TARGET VOLUME

摘要

The invention relates to a method for planning the irradiation of a moving target volume arranged in a body by means of a rescanning process using a particle irradiation system. The method has the steps of determining the target volume in a reference state of the movement, dividing the target volume into a plurality of target points which can be individually struck with a particle beam, calculating a target dose to be deposited at each of the target points of the target volume, determining a number of rescan passes in which each of the target points of the target volume is struck, calculating an expected average movement of the target points of the target volume using a movement model, taking into consideration the expected average movement of the target points of the target volume while planning the irradiation such that the deviation of the expected dose deposit from the target dose is detected for each target point and the target dose is corrected for each target point on the basis of the deviation, and generating control parameters for the irradiation system, said control parameters comprising a particle number to be applied per target point and rescan pass.