Biomaterial Database

[On the problem of air activation in megavoltage therapy with 15 to 20 MeV (author's transl)]. 1980

W L Dorn

During the operation of therapeutic linear accelerators using energies above 15 MeV the critical value of radioactive pollution in the exhaust air may be exceeded in case of extreme conditions. Methods for calculation and limitation of the activity in the air are described.

UI	MeSH Term	Description	Entries
D008433	Mathematics	The deductive study of shape, quantity, and dependence. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)	Mathematic
D010315	Particle Accelerators	Devices which accelerate electrically charged atomic or subatomic particles, such as electrons, protons or ions, to high velocities so they have high kinetic energy.	Betatrons,Linear Accelerators,Accelerator, Linear,Accelerator, Particle,Accelerators, Linear,Accelerators, Particle,Betatron,Linear Accelerator,Particle Accelerator
D011835	Radiation Protection	Methods and practices adopted to protect against RADIATION.	Protection, Radiation
D011882	Radiotherapy, High-Energy	Radiotherapy using high-energy (megavolt or higher) ionizing radiation. Types of radiation include gamma rays, produced by a radioisotope within a teletherapy unit; x-rays, electrons, protons, alpha particles (helium ions) and heavy charged ions, produced by particle acceleration; and neutrons and pi-mesons (pions), produced as secondary particles following bombardment of a target with a primary particle.	Megavolt Radiotherapy,High-Energy Radiotherapy,Radiotherapy, Megavolt,High Energy Radiotherapy,Radiotherapy, High Energy
D000398	Air Pollution, Radioactive	Contamination of air with radioactive substances.	Radioactive Air Pollution,Pollution, Radioactive Air

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