X-Ray Interactions with Matter Flashcards

1
Q

Which of the following tissue types is likely to have the greatest number of photoelectric events?
Bone, muscle, soft tissue or fat

A

Bone

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2
Q

Which interaction, within the diagnostic range, does not involve the removal of an orbital electron?

A

Classical

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3
Q

A photon of 10 MeV colliding with a nucleus will likely result in what type of interaction?

A

Photodisintegration

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4
Q

Which kVp will produce the greatest number of photodisintegration events?

A

None (does not use kVp)

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5
Q

Positive contrast media is administered to a patient to increase what type of interaction?

A

Photoelectric

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6
Q

Which interaction in the diagnostic range involves the total absorption of the incident photon?

A

Photoelectric

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7
Q

The ejection of a nuclear fragment is part of which interaction?

A

Photodisintegration

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8
Q

When the kVp selected is equal to or slightly greater than the inner shell binding energy of a tissue atom, which interaction predominates?

A

Photoelectric

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9
Q

Secondary photons are also produced during what type of interaction?

A

Photoelectric

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10
Q

Which of the following is an undesirable contributor to image contrast and density?

A

Compton

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11
Q

Penetration will result in which shades of the radiographic image?

A

Dark or Black

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12
Q

Penetration is more likely with which photon energy?

A

High

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13
Q

Which of the following equates to patient dose?
Penetration, absorption, or scatter

A

Absorption

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14
Q

Differential absorption involves which interaction?

A

Photoelectric

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15
Q

T/F: The problem with scatter is that it strikes the image receptor in the wrong place.

A

True

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16
Q

Which of the following affects quantity?
1. kVp
2. mAs
3. distance

A

1, 2 and 3

17
Q

What happens to quality as mAs increase?

A

Unaffected by mAs