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Questions and Answers
What is the frequency of the resonance cavity of medical linear accelerators?
What is the frequency of the resonance cavity of medical linear accelerators?
- 4 million Hertz
- 3 billion Hertz (correct)
- 2 billion Hertz
- 5 million Hertz
What did R. Wideroe demonstrate in 1928?
What did R. Wideroe demonstrate in 1928?
- Photons could be accelerated through a tube using radio frequency voltage
- Electrons could be accelerated through a tube using radio frequency voltage (correct)
- Neutrons could be accelerated through a tube using radio frequency voltage
- Protons could be accelerated through a tube using radio frequency voltage
When were medical linear accelerators first used clinically?
When were medical linear accelerators first used clinically?
- Early 1950’s (correct)
- 1960’s
- 1940’s
- Late 1930’s
What type of beam can be used to treat deep-seated tumors in a linear accelerator?
What type of beam can be used to treat deep-seated tumors in a linear accelerator?
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What is the energy range of electron beams used in linear accelerators for radiation therapy?
What is the energy range of electron beams used in linear accelerators for radiation therapy?
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Study Notes
Medical Linear Accelerators
- The frequency of the resonance cavity of medical linear accelerators is 100-300 MHz.
- In 1928, R. Wideroe demonstrated the first linear accelerator, which accelerated ions using radiofrequency (RF) electric fields.
- Medical linear accelerators were first used clinically in the 1950s.
- A high-energy photon beam can be used to treat deep-seated tumors in a linear accelerator.
- The energy range of electron beams used in linear accelerators for radiation therapy is 4-25 MeV.
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