Question 1

As a result of pair production,a(n)______________ and a(n)______________ are produced.

Accepted Answer

A)  electron;positron 
B)  electron;proton 
C)  proton;neutron 
D)  neutron;electron

Question 2

Compton scattering involves the x-ray photon:

Accepted Answer

A)  being absorbed in the atom 
B)  removing an inner-shell electron 
C)  removing a middle- or outer-shell electron 
D)  passing through the atom without any change

Question 3

Radiation interacting with bone is more likely to be absorbed,resulting in that area of the image being:

Accepted Answer

A)  a light shade of gray 
B)  a dark shade of gray 
C)  black 
D)  all of the above

Question 4

The fog seen on the radiographic image is the result of:

Accepted Answer

A)  coherent scattering 
B)  classical scattering 
C)  photoelectric interactions 
D)  Compton interactions

Question 5

The primary source of radiation exposure to the radiographer who is in the room during an exposure is:

Accepted Answer

A)  from scatter from the table 
B)  from scatter from the patient 
C)  from scatter from the image receptor 
D)  hard to determine;it depends on the procedure being done

Question 6

The Compton scatter photon:

Accepted Answer

A)  may exit the patient as part of the remnant radiation 
B)  does not have enough energy to produce further interactions 
C)  has enough energy to produce further interactions 
D)  A and C

Question 7

Photodisintegration occurs when the incident photon interacts with:

Accepted Answer

A)  an inner-shell electron 
B)  an outer-shell electron 
C)  inner- and outer-shell electrons 
D)  the nucleus of the atom

Question 8

The x-ray photons that are produced as a result of a characteristic cascade during a Compton interaction:

Accepted Answer

A)  are characteristic x-ray photons 
B)  are brems x-ray photons 
C)  are Compton x-ray photons 
D)  none of the above

Question 9

Photoelectric interactions:

Accepted Answer

A)  contribute significantly to patient dose 
B)  should be reduced as close to 0 events as possible 
C)  negatively affect radiographic image quality 
D)  all of the above

Question 10

Coherent scattering involves:

Accepted Answer

A)  an x-ray photon with high energy 
B)  an x-ray photon with low energy 
C)  ionization 
D)  all of the above

Question 11

The probability of Compton scattering depends on the energy level of the incident x-ray photon.

Accepted Answer

A) True 
 B)False

Question 12

Compton scattering typically occurs with x-ray photons in the energy range of:

Accepted Answer

A)  5-10 keV 
B)  20-40 keV 
C)  60-90 keV 
D)  100-135 keV

Question 13

Pair production occurs when the incident photon interacts with:

Accepted Answer

A)  an inner-shell electron 
B)  an outer-shell electron 
C)  inner- and outer-shell electrons 
D)  the nucleus of the atom

Question 14

The photoelectric interaction and Compton interaction can both result in a characteristic cascade,producing characteristic radiation.

Accepted Answer

A) True 
 B)False

Question 15

Secondary x-ray photons are the result of:

Accepted Answer

A)  Compton interactions 
B)  Thompson scattering 
C)  photoelectric interactions 
D)  A and C

Question 16

All Compton scatter photons travel in the direction of the image receptor.

Accepted Answer

A) True 
 B)False

Question 17

Radiation interacting with air is more likely to be _____________,resulting in that area of the image being darker.

Accepted Answer

A)  absorbed 
B)  transmitted 
C)  attenuated 
D)  scattered

Question 18

Most classical scatter photons:

Accepted Answer

A)  are the result of the removal of an orbital electron 
B)  are absorbed in the body 
C)  are transmitted through the body 
D)  become remnant radiation

Question 19

Photodisintegration interactions:

Accepted Answer

A)  occur very often during radiographic procedures 
B)  seldom occur during radiographic procedures 
C)  never occur during radiographic procedures 
D)  it depends on the procedure

Question 20

Without differential absorption,the image would be a single shade of gray.

Accepted Answer

A) True 
 B)False

Exam 7: X-Ray Interactions With Matter

As a result of pair production,a(n) and a(n) are produced.

Compton scattering involves the x-ray photon:

Radiation interacting with bone is more likely to be absorbed,resulting in that area of the image being:

The fog seen on the radiographic image is the result of:

The primary source of radiation exposure to the radiographer who is in the room during an exposure is:

The Compton scatter photon:

Photodisintegration occurs when the incident photon interacts with:

The x-ray photons that are produced as a result of a characteristic cascade during a Compton interaction:

Photoelectric interactions:

Coherent scattering involves:

The probability of Compton scattering depends on the energy level of the incident x-ray photon.

Compton scattering typically occurs with x-ray photons in the energy range of:

Pair production occurs when the incident photon interacts with:

The photoelectric interaction and Compton interaction can both result in a characteristic cascade,producing characteristic radiation.

Secondary x-ray photons are the result of:

All Compton scatter photons travel in the direction of the image receptor.

Radiation interacting with air is more likely to be _____________,resulting in that area of the image being darker.

Most classical scatter photons:

Photodisintegration interactions:

Without differential absorption,the image would be a single shade of gray.

Exam 7: X-Ray Interactions With Matter

As a result of pair production,a(n) ______________ and a(n) ______________ are produced.

Compton scattering involves the x-ray photon:

Radiation interacting with bone is more likely to be absorbed,resulting in that area of the image being:

The fog seen on the radiographic image is the result of:

The primary source of radiation exposure to the radiographer who is in the room during an exposure is:

The Compton scatter photon:

Photodisintegration occurs when the incident photon interacts with:

The x-ray photons that are produced as a result of a characteristic cascade during a Compton interaction:

Photoelectric interactions:

Coherent scattering involves:

The probability of Compton scattering depends on the energy level of the incident x-ray photon.

Compton scattering typically occurs with x-ray photons in the energy range of:

Pair production occurs when the incident photon interacts with:

The photoelectric interaction and Compton interaction can both result in a characteristic cascade,producing characteristic radiation.

Secondary x-ray photons are the result of:

All Compton scatter photons travel in the direction of the image receptor.

Radiation interacting with air is more likely to be _____________,resulting in that area of the image being darker.

Most classical scatter photons:

Photodisintegration interactions:

Without differential absorption,the image would be a single shade of gray.

As a result of pair production,a(n) and a(n) are produced.