Jo-IMRT have a lot of advantages compared with three dimension conformal radiotherapy such as: radiation dose at lesion volume (tumor and node) of 72Gy, higher dose delivery (2.25 compared with 2 Gy / fraction) and shorter radiation time (32 compared with 35 days). Additionally, it decreases doses at surrounding normal tissue such as: righ parotid gland (33.3 58.9), left parotid gland (34.9 59.6Gy), spinal cord (32.5 42.4Gy), brainstem (31.7 42.6Gy), inner / middle ear (45.8 compared with 54.3 Gy).