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Dental Assisting > Radiology > Flashcards

Radiology Flashcards

1
Q

Radiation

A

Energy to take X-ray. Waves or streams of particles

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2
Q

X radiation

A

High energy beam. Causes Biological changes in living cells

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3
Q

X ray

A

Beam of energy that has the power to penetrate objects

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4
Q

Radiology

A

Study of radiation

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5
Q

Radiograph

A

A picture or image in X-ray film produced by the passage of X-ray through teeth and related structures

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6
Q

Dental radio graph

A

Radiograph is teeth or dental related stuff X-ray

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7
Q

Radiation biology

A

Study of effects on ionizing radiation plan living tissue to understand the harmful effects of x radiation

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8
Q

Importance?

A

Periodontal disease
Growth patterns
Dental caries
Eruption of teeth

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9
Q

ALARA

A

As low as reasonably achievable

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10
Q

How to minimize exposure

A

Proper exposure time.
Fastest film available
Proper film handling
Proper technique

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11
Q

Health history?

A

Cancer? Pregnant?

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12
Q

Are X-rays a prescription?

A

Yes

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13
Q

BWX

A

Bitewing xray. Just crowns of teeth. Used to diagnose dental caries in interproximal areas

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14
Q

FMX

A

Full mouth series. Bitewings. Anterior. Premolars canines. Molars. Sometimes occlusal surface.

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15
Q

Fast film

A

D,E,F

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16
Q

Film handling

A 
Careful handling. Gentle
Avoid artifacts (scratches)
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17
Q

Film processing

A

Use fresh solutions

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18
Q

Distance position . Location

A

6 feet. 120degrees. Lead wall or wall between the machine

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19
Q

Dosimeter

A 
Radiation monitoring badges 
Amount of X-ray operator is receiving  
5.0 for operator yearly
FOR YOU
waist level outside of clothing
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20
Q

Final operator protection

A

Never hold film in place for patient

Never hold tubehead during exposure

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21
Q

Aluminum filtration

A

Removes non useful low energy long wave length and soft radiation

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22
Q

Lead collimation

A

Restricts size of beam by use of lead line PID (position indicator device)
Federal law 2.25 inches or less

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23
Q

Sources of radiation

A

Natural and artificial.

Sun earth, atmosphere: atomic testing,

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24
Q

Benefits to radiation

A 
Disease protection
Retained roots
Foreign bodies
Cysts
Infection
Tooth development 
Growth irregularities
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25
Q

Parallel technique

A

Moving or lying on the same plane

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26
Q

Intersecting

A

Cut across or through

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27
Q

Perpendicular

A

Intersecting lines forming a right angle

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28
Q

Right angle

A

90 degrees

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29
Q

Increase object tooth receptor distance

A

Paralleling technique

30
Q

Long come technique

A

Decrease magnification

31
Q

Longer the cone …

A

Reduces magnification

32
Q

Collimation

A

Limit size of primary beam

33
Q

Critical organ system

A

Reproduction
Thyroid
Blood forming tissues (hematopoietic)

34
Q

Side effect of radiation therapy

A 
Ulcers in the mouth
Difficulty swallowing
Loss of taste 
Puffy gums 
Burn epithelial cells
35
Q

Latent period

A

Time of exposure to visible results

Period where nothing shows

36
Q

Disease

A

Abnormality that causes your body to not function at its normal rate

37
Q

Inhalation

A

Berathin

38
Q

Ingestion

A

Swallowing

39
Q

Mucous membrane

A

Spatter into the nose or mouth

40
Q

Breaks in the skin

A

Puncture. Hang nail

41
Q

Epidemiology

A

Study of the spreading of disease

42
Q

Etiology

A

What causes the disease

43
Q

PID

A

Positioning indicator device

44
Q

X-ray tube head

A

Tightely sealed metal housing for x ray tube that produces dental X-rays

45
Q

Metal housing if tube head

A

Protects X-ray tube plus grounds high voltage components

46
Q

Insulating oil

A

Prevents overheating by absorbing the heat created by the production of x ray

47
Q

Position indicating device (PID)

A

Aims and shapes X-ray beam

48
Q

Aluminum discs

A

Filters out non penetrating, longer wavelength X-rays

49
Q

Lead collimator

A

Restricts size of X-ray beam

50
Q

Tube head seal

A

Seals oil in the tubehead

51
Q

Cathode

A

A negative electrode supplies electrons necessary to generate X-rays

52
Q

Anode

A

Positive electrode; converts electrons into X-ray photons

53
Q

Filament circuit

A

Regulates flow of electrical current to the filament

54
Q

Molybdenum

A

Focuses electrons into a narrrow beam and directs beam across the tube towards the tungsten target

55
Q

Tungsten filament

A

Produces electrons when heated

56
Q

Lead glass housing

A

Vacuum tube that prevents X-rays from escaping in all directions

57
Q

Vacuum

A

Prevents X-rays from escaping

58
Q

Copper stem

A

Dissipates the heat away from the tungsten target

59
Q

Unleaded glass window

A

Permits X-rays beam to exit tube and directs beam to the ALUMINUM disks lead collimator and PID

60
Q

X-ray beam

A

Beam of energy that has the power to penetrate substance and record images on photographic film

61
Q

Tungsten target

A

Serves as a focal spot and converts bombarding electrons into X-ray photons

62
Q

Electron stream

A

Tiny negatively charged particles found in atoms. Travel from cathode to anode and are converted to X-ray energy and heat
(1% of energy converted into X-ray. 99% lost to heat )

63
Q

Matter

A

Matter is always moving (atomic level)

64
Q

Kinetic

A

Moving energy

65
Q

Potential

A

Stored energy

66
Q

Atom

A 
Smallest unit of matter
(Nucleus)
Positive and neutral  
(Protons and neutrons)
Orbit shells have electrons. (Negative charge)
67
Q

Binding force “electrostatic force”

A

Strongest energy is closest to nucleus.

68
Q

Balanced atom

A

Equal number of neutrons protons and electrons

69
Q

Simplest atom

Hydrogen

A

1 of each proton neutron electron

70
Q

Tungsten atom

A

74 electrons neutrons protons

71
Q

Molecule

A

Two or more atoms

72
Q

Ionization

A

Losing or gaining electrons

Results in ion pair

Dental Assisting (15 decks)

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