Quiz on X-ray Interaction with Matter

What type of scattering occurs with low energy x-rays?

• Pair Production

• Photoelectric Effect

• Coherent Scattering

• Compton Scattering

Which interaction involves the ejection of an outer shell electron?

• Photodisintegration

• Compton Scattering

• Photoelectric Effect

• Coherent Scattering

What is the result of the Compton Scattering process?

• Scattered X-ray

• Emission of a nuclear fragment

• Change in direction without energy change

• Total absorption of x-ray energy

The probability of the photoelectric effect is directly proportional to which factor?

• X-ray energy

• Incident x-ray energy

• Atomic number to the third power

• Outer shell electron binding energy

What happens during pair production?

• A nuclear fragment is emitted

• An x-ray is absorbed by the nucleus

• Two electrons are created from an x-ray

• An outer shell electron is ejected

What is the energy threshold for pair production to occur?

• 10 MeV

• 1.02 MeV

• 0.51 MeV

• 5 MeV

Which scattering process contributes slightly to image noise?

• Pair Production

• Photoelectric Effect

• Coherent Scattering

• Compton Scattering

What is the main characteristic of photodisintegration?

• Ejects outer shell electrons

• Involves interaction with the nucleus

• Occurs with low energy x-rays

• Produces characteristic x-rays

What is the result of the photoelectric effect?

• Scattered x-ray with reduced energy

• Total absorption of x-ray energy

• Emission of a positron

• Deflection of x-ray by 180 degrees

What type of radiation is produced during the annihilation process in pair production?

• Gamma radiation

• Characteristic radiation

• X-ray radiation

• Annihilation radiation