N Concordance 1 to a total dose of 1000 Gy in a linear accelerator (LINAC) or exposed to 60Co g 2 hes onto the treatment head of a linear accelerator has reduced skin dose by as 3 art radiotherapy thus requires a linear accelerator with photon and electron bea 4 produced by instruments such as linear accelerators. Gamma rays are also electr 5 eated at institutions that have linear accelerators of 4-10 MV energy and treat 6 ial breast irradiation with 6 MV linear accelerators from different manufacturer 7 ays from two different models of linear accelerators from the same manufacturer 8 nd neck using Co60 equipment or linear accelerators with energies no greater th 9 cranial or spinal fields using linear accelerators with a minimum energy of 4 10 al data of patients treated with linear accelerator radiosurgery for an AVM were