ABTER Proteção Radiológica Practice Questions - ABTER Prova De Título De Especialista Em Supervisão De Proteção Radiológica No Radiodiagnóstico Exam

They have threshold energy requirements of 1.022 MeV and >10 MeV respectively, which vastly exceed diagnostic tube potentials (typically 20–150 kVp). They require heavy particulate radiation (alpha particles) and cannot be initiated by electromagnetic photons. They occur only in pure vacuum environments and are completely attenuated by diagnostic tube glass envelopes. They are restricted to positive ion beam therapy and are legally prohibited by ANVISA RDC nº 611/2022.