| abstract |
A medical device including a hadron therapy device, MRI, and prompt gamma system. A hadron therapy device having an initial beam energy, an MRI for acquiring a magnetic resonance MR image in an imaging volume Vp including a target spot, and adapted to acquire a signal generated by the hadron beam A prompt gamma system 3, and / or a PET system, and / or an ultrasound system, acquired by one or more of the prompt gamma system, the PET system, and / or the ultrasound system Based on the signal, the actual position BP1 of the Brad peak of the hadron beam is calculated, and the MR image of the imaging volume Vp acquired using MRI from the outer surface 41S of interest to the target spot along the beam path Configured to position the actual position BP1 of the Bragg peak above And a medical device. [Selection] Figure 7 |