Radiology and Radiation Quiz

Which of the following is NOT an SI unit?

• Roentgen

• Gray

• Sievert

• Becquerel

What are beta particles?

• High-speed electrons

• High-speed protons

• Neutral radiation particles

• Particles emitted from a nucleus at rest

What SI units are used to describe dose in therapeutic radiology?

• Roentgen and Rad

• Gray and Centigray

• Rem and Sievert

• Curie and Becquerel

Who discovered X-rays and when?

• Marie Curie, 1898

• Henri Becquerel, 1896

• Wilhelm Roentgen, 1895

• Thomas Edison, 1900

What are X-ray photons?

• High-speed electrons

• Particles with mass and charge

• Packets of electromagnetic energy without mass or charge

• Ionized atoms

Which is NOT a type of interaction between X-radiation and biological matter?

• Compton scattering

• Pair production

• Photoelectric absorption

• Bremsstrahlung

What does the “Z” symbol represent in an element?

• Atomic weight

• Atomic number

• Number of neutrons

• Electron binding energy

Pair production involves which of the following?

• An interaction between X-rays and the outer shell electrons

• The splitting of an atomic nucleus

• A matter-antimatter annihilation reaction

• The release of neutrons from a radioactive nucleus

What are enhanced natural sources of radiation?

• Radiation from naturally occurring materials that has been increased by human activities

• Artificial radiation sources from medical imaging

• Cosmic radiation from the sun

• Radiation from uranium mines only

What are the two forms of cosmic radiation?

• Alpha and beta radiation

• Solar and galactic cosmic rays

• Gamma and neutron radiation

• X-ray and ultraviolet radiation