Question 1

Which energy-level electrons possess the highest total energy?

Accepted Answer

A)  K
B)  L
C)  M
D)  NE) B) and D)
F) A) and B)

Question 2

If a photon interacts with matter and scatters, the photon

Accepted Answer

A)  no longer exists.
B)  exists with greater energy.
C)  exists with less energy.
D)  is totally absorbed.E) None of the above
F) A) and B)

Question 3

In which element are the inner-shell electrons more tightly bound to the nucleus?

Accepted Answer

A)  mercury (Z = 80) 
B)  tungsten (Z = 74) 
C)  lead (Z = 82) 
D)  chromium (Z = 24) E) A) and C)
F) B) and C)

Question 4

Match the following items with the correct choice as they relate to x-ray photon interactions.
-product of pair production

Accepted Answer

A)  60 kVp
B)  shaped contact
C)  focal spot size
D)  distance (SI
D)  
E)  44-48 inchesF) AP supine abdomen positionG) oblique projection of the abdomenH) 18 mAs @ 70 kVpI) All of the above
J) A) and F)

Question 5

The photon that exits the atom after a Compton scattering is called the Compton

Accepted Answer

A)  scattered photon.
B)  scattered electron.
C)  recoil electron.
D)  photoelectron.E) All of the above
F) A) and D)

Question 6

During the process of attenuation, the x-ray photon may interact with

Accepted Answer

A)  the nucleus.
B)  the entire atom.
C)  an orbital electron.
D)  all of the aboveE) C) and D)
F) A) and C)

Question 7

As the electron shells move farther from the nucleus, total electron energies ____ and binding energies ____.

Accepted Answer

A)  decrease; decrease
B)  increase; increase
C)  increase; decrease
D)  decrease; increaseE) All of the above
F) A) and D)

Question 8

Compton scattering occurs when an incident x-ray photon interacts with a ____ electron.

Accepted Answer

A)  loosely bound inner-shell
B)  tightly bound inner-shell
C)  loosely bound outer-shell
D)  tightly bound outer-shellE) A) and B)
F) A) and C) C

Question 9

When an x-ray photon passes through matter, it undergoes a process called

Accepted Answer

A)  induction.
B)  filtration.
C)  attenuation.
D)  resonance.E) None of the above
F) B) and C)

Question 10

As the angle of deflection is increased from 0 ∘\circ∘  to 180 ∘\circ∘  ,

Accepted Answer

A)  all energy is imparted to the incident photon.
B)  less energy is imparted to the recoil electron.
C)  greater energy is imparted to the scattered photon.
D)  greater energy is imparted to the recoil electron. E) All of the above
F) C) and D)

Question 11

During photoelectric absorption, the ejected electron is called a/an

Accepted Answer

A)  incident electron.
B)  photoelectron.
C)  characteristic electron.
D)  nuclear electron.E) A) and B)
F) A) and C)

Question 12

Secondary radiation energies are highest for which element?

Accepted Answer

A)  hydrogen
B)  carbon
C)  barium
D)  oxygenE) B) and D)
F) None of the above

Question 13

Which of the following interactions with matter results in a radiograph with higher contrast?

Accepted Answer

A)  Compton scattering
B)  coherent scatter
C)  photoelectric interactions
D)  photodisintegrationE) B) and C)
F) A) and D)

Question 14

Which of the following interactions with matter results in a radiograph with a loss of radiographic image contrast?

Accepted Answer

A)  Compton scattering
B)  coherent scatter
C)  photoelectric interactions
D)  photodisintegrationE) B) and D)
F) A) and B) A

Question 15

During which interaction with matter is the x-ray photon converted to matter in the form of two electrons?

Accepted Answer

A)  pair production
B)  Compton scattering
C)  photoelectric absorption
D)  coherent scatteringE) A) and D)
F) A) and B)

Question 16

In an effort to decrease the mAs of an exposure, the 15% rule of kVp change may be considered.Changing the original kVp of 84 using the 15% rule will have what impact?

Accepted Answer

A)  a higher incidence of pair production interactions
B)  greater Compton scatter interactions
C)  greater photon absorption in the patient
D)  an improvement in image contrastE) A) and D)
F) B) and C)

Question 17

During the process of attenuation, x-ray photons in the beam

Accepted Answer

A)  reduce in number.
B)  lose energy.
C)  interact.
D)  all of the aboveE) C) and D)
F) B) and C)

Question 18

Match the following items with the correct choice as they relate to x-ray photon interactions.
-Compton scattering

Accepted Answer

A)  60 kVp
B)  shaped contact
C)  focal spot size
D)  distance (SI
D)  
E)  44-48 inchesF) AP supine abdomen positionG) oblique projection of the abdomenH) 18 mAs @ 70 kVpI) A) and F)
J) C) and E)

Question 19

Unwanted radiographic image densities caused predominantly by scattered photons is called

Accepted Answer

A)  base fog.
B)  radiation fog.
C)  chemical fog.
D)  photoelectric fog.E) A) and D)
F) C) and D) B

Question 20

During Compton scattering, the incident photon energy is divided between the

Accepted Answer

A)  recoil electron and the scattered photon.
B)  incident photon and the scattered photon.
C)  incident photon and the recoil electron.
D)  recoil electron and the photoelectron.E) A) and D)
F) B) and D)

Exam 12: X-Ray Interactions

Which energy-level electrons possess the highest total energy?

Correct AnswerverifiedShow Answer

If a photon interacts with matter and scatters, the photon

Correct AnswerverifiedShow Answer

In which element are the inner-shell electrons more tightly bound to the nucleus?

Correct AnswerverifiedShow Answer

Match the following items with the correct choice as they relate to x-ray photon interactions. -product of pair production

Correct AnswerverifiedShow Answer

The photon that exits the atom after a Compton scattering is called the Compton

Correct AnswerverifiedShow Answer

During the process of attenuation, the x-ray photon may interact with

Correct AnswerverifiedShow Answer

As the electron shells move farther from the nucleus, total electron energies ____ and binding energies ____.

Correct AnswerverifiedShow Answer

Compton scattering occurs when an incident x-ray photon interacts with a ____ electron.

Correct AnswerverifiedC

When an x-ray photon passes through matter, it undergoes a process called

Correct AnswerverifiedShow Answer

As the angle of deflection is increased from 0 ∘\circ∘ to 180 ∘\circ∘ ,

Correct AnswerverifiedShow Answer

During photoelectric absorption, the ejected electron is called a/an

Correct AnswerverifiedShow Answer

Secondary radiation energies are highest for which element?

Correct AnswerverifiedShow Answer

Which of the following interactions with matter results in a radiograph with higher contrast?

Correct AnswerverifiedShow Answer

Which of the following interactions with matter results in a radiograph with a loss of radiographic image contrast?

Correct AnswerverifiedA

During which interaction with matter is the x-ray photon converted to matter in the form of two electrons?

Correct AnswerverifiedShow Answer

In an effort to decrease the mAs of an exposure, the 15% rule of kVp change may be considered.Changing the original kVp of 84 using the 15% rule will have what impact?

Correct AnswerverifiedShow Answer

During the process of attenuation, x-ray photons in the beam

Correct AnswerverifiedShow Answer

Match the following items with the correct choice as they relate to x-ray photon interactions. -Compton scattering

Correct AnswerverifiedShow Answer

Unwanted radiographic image densities caused predominantly by scattered photons is called

Correct AnswerverifiedB

During Compton scattering, the incident photon energy is divided between the

Correct AnswerverifiedShow Answer

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As the electron shells move farther from the nucleus, total electron energies and binding energies .

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C

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As the angle of deflection is increased from 0^$\circ$to 180^$\circ$,

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A

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B

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