Weihua BAN ; Xiaofang LI ; Haibin LU ; Zhaoning LIANG ; Ying TAO ; Liwen LIANG
Chinese Journal of Medical Instrumentation 2016;40(3):230-231
This paper mainly introduces the principle of the pulse modulation system of ONCOR Siemens Oncor linear accelerator, then describe the analysis, maintenance processes and methods of faults.