California Cancer Reporting System Standards Volume I: Abstracting and Coding Procedures
Radiation is classified as beam when the source of radioactivity is outside the patient, as in a cobalt machine or linear accelerator. Examples of beam radiation are:
Betatron
Brachytron
Cobalt
Cyclotron
Grenz ray
Helium ion or other heavy particle beam
Linear accelerator (LINAC)
MeV
Neutron beam
Spray radiation
Stereotactic radiosurgery, such as gamma knife and proton beam
X-ray