Question 4 25 25 pts the reduction of the intensity

Question 4
2.5 / 2.5 pts
The reduction of the intensity of radiation as it passes through a material is
known as what?
Correct!
Attenuation
Linear energy coefficient
Linear energy transfer
Absorption
Good work
Question 5

2.5 / 2.5 pts
The process where energy is transferred from the primary photon beam to the electrons of the
atom is called
Correct!
Question 6
2.5 / 2.5 pts
Pair production and Photodisintegration interactions do not occur in diagnostic radiology.
Correct!
Question 7
2.5 / 2.5 pts
Which of the following are by-products of photoelectric absorption?

1 & 3 only
2 & 3 only
Correct!
1, 2 & 3
Good work
Question 8
2.5 / 2.5 pts
Ionization can result from which of the following interactions of radiation with
tissue?
1. Photoelectric absorption
2. Compton effect
3. Coherent (classical) scatter
1 only
Correct!
1 & 2 only
2 & 3 only
1, 2 & 3
Coherent is an excitation reaction. No energy is lost in the reaction,
but a scattered photon is produced. PE and Compton dislodge
electrons: PE inner shell and Compton outer shell. These are ionizing
reactions.