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Dental Assisting > Radiology > Flashcards

Radiology Flashcards

(72 cards)

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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
Parallel technique
Moving or lying on the same plane
26
Intersecting
Cut across or through
27
Perpendicular
Intersecting lines forming a right angle
28
Right angle
90 degrees
29
Increase object tooth receptor distance
Paralleling technique
30
Long come technique
Decrease magnification
31
Longer the cone ...
Reduces magnification
32
Collimation
Limit size of primary beam
33
Critical organ system
Reproduction Thyroid Blood forming tissues (hematopoietic)
34
Side effect of radiation therapy
``` Ulcers in the mouth Difficulty swallowing Loss of taste Puffy gums Burn epithelial cells ```
35
Latent period
Time of exposure to visible results Period where nothing shows
36
Disease
Abnormality that causes your body to not function at its normal rate
37
Inhalation
Berathin
38
Ingestion
Swallowing
39
Mucous membrane
Spatter into the nose or mouth
40
Breaks in the skin
Puncture. Hang nail
41
Epidemiology
Study of the spreading of disease
42
Etiology
What causes the disease
43
PID
Positioning indicator device
44
X-ray tube head
Tightely sealed metal housing for x ray tube that produces dental X-rays
45
Metal housing if tube head
Protects X-ray tube plus grounds high voltage components
46
Insulating oil
Prevents overheating by absorbing the heat created by the production of x ray
47
Position indicating device (PID)
Aims and shapes X-ray beam
48
Aluminum discs
Filters out non penetrating, longer wavelength X-rays
49
Lead collimator
Restricts size of X-ray beam
50
Tube head seal
Seals oil in the tubehead
51
Cathode
A negative electrode supplies electrons necessary to generate X-rays
52
Anode
Positive electrode; converts electrons into X-ray photons
53
Filament circuit
Regulates flow of electrical current to the filament
54
Molybdenum
Focuses electrons into a narrrow beam and directs beam across the tube towards the tungsten target
55
Tungsten filament
Produces electrons when heated
56
Lead glass housing
Vacuum tube that prevents X-rays from escaping in all directions
57
Vacuum
Prevents X-rays from escaping
58
Copper stem
Dissipates the heat away from the tungsten target
59
Unleaded glass window
Permits X-rays beam to exit tube and directs beam to the ALUMINUM disks lead collimator and PID
60
X-ray beam
Beam of energy that has the power to penetrate substance and record images on photographic film
61
Tungsten target
Serves as a focal spot and converts bombarding electrons into X-ray photons
62
Electron stream
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
Matter
Matter is always moving (atomic level)
64
Kinetic
Moving energy
65
Potential
Stored energy
66
Atom
``` Smallest unit of matter (Nucleus) Positive and neutral (Protons and neutrons) Orbit shells have electrons. (Negative charge) ```
67
Binding force "electrostatic force"
Strongest energy is closest to nucleus.
68
Balanced atom
Equal number of neutrons protons and electrons
69
Simplest atom | Hydrogen
1 of each proton neutron electron
70
Tungsten atom
74 electrons neutrons protons
71
Molecule
Two or more atoms
72
Ionization
Losing or gaining electrons | Results in ion pair

Dental Assisting (15 decks)

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