The invention relates to a method for checking an irradiation installation in which a dose distribution is deposited in a target object by means of a treatment beam, said method comprising the following steps: an irradiation planning data record optimised for the irradiation of a moving target volume is provided a movement signal that reproduces a movement of the target volume is provided a phantom is irradiated, said phantom being formed for detecting a dose distribution deposited in the phantom during or after the irradiation, using the control parameters stored at the irradiation planning data record and the movement signal a dose distribution deposited in the phantom is determined a dose distribution to be expected is calculated on the basis of parameters that are related to the control of the irradiation installation during the irradiation and the determined dose distribution deposited in the phantom is compared to the calculated dose distribution to be expected. The invention also relates to a corresponding device and an irridation installation comprising such a device.
