X-ray Interactions and Effects

The video explores five types of x-ray interactions with matter: coherent scattering, Compton effect, photoelectric effect, pair production, and photodisintegration. It emphasizes the importance of the Compton and photoelectric effects in diagnostic radiology. The video also explains differential absorption, its impact on image contrast, and how factors like kvp, atomic number, and tissue density influence it. Finally, it distinguishes between absorption and attenuation, providing a comprehensive understanding of x-ray interactions.

Which of the following is NOT one of the five types of interactions that X-rays have with matter?

• Coherent scattering

• Gamma decay

• Photoelectric effect

• Compton effect

What happens to the frequency and energy of X-ray photons as their wavelength decreases?

• Both frequency and energy decrease

• Frequency increases, energy decreases

• Both frequency and energy increase

• Frequency decreases, energy increases

In coherent scattering, what happens to the energy level of the X-ray photon?

• It doubles

• It remains the same

• It decreases

• It increases

Which interaction is responsible for most of the occupational radiation exposure in radiologic technologists?

• Pair production

• Photoelectric effect

• Coherent scattering

• Compton effect

What is the primary interaction responsible for image contrast in diagnostic radiology?

• Pair production

• Coherent scattering

• Compton effect

• Photoelectric effect

Which interaction involves the creation of a positron and a negatron?

• Compton effect

• Coherent scattering

• Photoelectric effect

• Pair production

What is the effect of increasing the energy of X-rays on the probability of the photoelectric effect occurring?

• Increases the probability

• Decreases the probability

• Has no effect

• Doubles the probability

What is differential absorption?

• The difference between absorption and attenuation

• The sum of Compton scattering, photoelectric effect, and transmitted X-rays

• The total reduction in the number of X-ray photons

• The sum of coherent scattering and transmitted X-rays

How does mass density affect differential absorption?

• It doubles differential absorption

• It decreases differential absorption

• It has no effect on differential absorption

• It increases differential absorption

What is the difference between absorption and attenuation?

• Absorption is all or none, attenuation includes scattering

• Absorption includes scattering, attenuation is all or none

• Absorption is total, attenuation is partial

• Absorption is partial, attenuation is total