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To improve the irradiation accuracy in hadrontherapy, a lot of studies are in the evaluation uncluding how to integrate MRI and PET at the treatement of cancer patients. These two future techniques will offer simultaneously the monitoring of the beam during the irradiation. In this study and for the first time, we calculated the dose distribution in a voxel of the head for several carbon ion energies at B=1.5T using fluka MC code. Afterwards, either longitudinal or radial dose deflection was simulated with and without B. The maximum longitudinal deviation of bragg pick depth was 0.672 mm at 200 MeV and the the maximum radial deflection was almost 4.23 cm at 100 MeV. Both of them are in the presence of B=1.5T. Our results are in a good agreement with previous experimental results (a maximum relative error founded of 2.08%). The results of this study will offer the monitoring of the dose deposition with good accuracy in the presence of a magnetic field in carbon ion therapy.

Impact of using an axial magnetic field of 1.5T in carbon ion therapy for the diagnosis of head cancers