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XRAY 111 > Interaction > Flashcards

Interaction Flashcards

0
Q

The reduction in radiation intensity as a result of absorption and scattering

A

Attenuation

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1
Q

X-ray disappears

A

Absorption

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2
Q

Partial absorption

A

Attenuation

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3
Q

Absorbs many x-rays

A

Radiopaque

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4
Q

Absorbs few x-rays

A

Radiolucent

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5
Q

What are the 2 factors that determine attenuation?

A

Atomic number(Z#) - number of protons in the nucleus

Tissue Density

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6
Q

Produced whenever x-rays interact with any type of matter

A

Secondary radiation

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7
Q

Completely absorbed and energy emitted

A

Secondary radiation

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8
Q

A type of secondary radiation that only loses some energy and continues in another direction

A

Scatter radiation

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9
Q

Primary radiation has what type of energy?

Secondary?

A

High

Low

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10
Q

Occurs within the patient

A

Secondary radiation

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11
Q

Results in higher patient dose

A

Secondary radiation

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12
Q

What type of radiation happens to technologists?

A

Scatter radiation

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13
Q

Passes through the tube housing

A

Leakage radiation

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14
Q

Passes through the window

A

Primary radiation

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15
Q

Produced when primary interacts with matter

A

Secondary radiation

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16
Q

Primary and secondary rays which exit the patient and interacts with technologist

A

Remnant radiation

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17
Q

Occurs anytime radiation interacts with matter

A

Secondary radiation

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18
Q

Increases with the use of increased kVp

A

Secondary radiation

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19
Q

Travels at the speed of light

A

Secondary radiation

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20
Q

Occurs at lower kVp

A

Secondary radiation

21
Q

Increases patient dose

A

Secondary radiation

22
Q

What are the five types of interaction energies?

A
  1. Classical/Coherent/Thompson
  2. Photoelectric
  3. Compton
  4. Pair production
  5. Photodisintegration
23
Q

kVp is lower than 10

A

Classical interaction

24
Q

No ionization occurs

A

Classical interaction

25
Q

Has low kVp’s

A

Photoelectric interaction

26
Q

Interacts with the K shell

A

Photoelectric interaction

27
Q

Absorption at the inner K shell

A

Photo electric interaction

28
Q

Where secondary radiation occurs

A

Photoelectric interaction

29
Q

Is used a lot in mammography

A

Photoelectric interaction

30
Q

High contrast

A

Photoelectric interaction

31
Q

Dependent on the atomic number

A

Photoelectric interaction

32
Q

As atomic number increases, photoelectric absorption ________.

A

Increases

33
Q

Deals with higher kVp

A

Compton interaction

34
Q

Interacts with the outershell electron

A

Compton interaction

35
Q

Results in scatter radiation

A

Compton interaction

36
Q

Not useful for images but we have to have it

A

Compton interaction

37
Q

Electron diverges at any direction or angle

A

Compton interaction

38
Q

Occurs throughout diagnostic range

A

Compton interaction

39
Q

Knocks out outershell electrons

A

Compton interaction

40
Q

Attenuation

A

Compton interaction

41
Q

Increases radiographer dose

A

Compton interaction

42
Q

Energies greater than 1.02 MeV

A

Pair production

43
Q

Used in nuclear medicine and PET’s

A

Pair production

44
Q

What type of atomic number does barium have?

A

High

45
Q

Has two positrons and one electron

A

Pair production

46
Q

Used in radiation therapy

A

Photodisintegration

47
Q

Energies above 10 MeV

A

Photodisintegration

48
Q

Interacts with nuclear force field and then disappears

A

Pair production

49
Q

Interacts with nucleus

A

Photodisintegration

50
Q

Photon absorbed by nucleus and nuclear fragment is emitted

A

Photodisintegration

51
Q

Unimportant in diagnostic radiation

A

Pair production & Photodisintegration

XRAY 111 (12 decks)

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