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Min Ma1, Ke Zhang1, Kuo Men1, Jianrong Dai1 1Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical…

1. High energy photon beams from an accelerator require flattening filters in order to _____. ANSWER: E. - make the beam flat across the full field 2. The equivalent square…

Mohammad Amin Mosleh-Shirazi PhD CSciPresident, Iranian Association of Medical PhysicistsHead of Radiotherapy Physics Unit, Department of Radio-oncology, Namazi Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, Iran(On behalf of the…