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Radiography > dental > Flashcards

dental Flashcards

1
Q

Which process occurs with Ionization?

A

an electron is displaced from its orbit

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2
Q

Term used to describe an atom that has lost an electron from its orbit.

A

ion

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3
Q

Not a property of X-ray

A

the ability to fluoresce all materials

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4
Q

which elements are loacted in Xray tube

A

anod, cathod, focusing cup

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5
Q

Nucleons

A

Not particular type of radiation

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6
Q

Electons

A

Not type of electroradition

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7
Q

T or F xrays cause ionization

A

True

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8
Q

T or F Xrays cannot be focused to a point

A

True

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9
Q

T or F Xrays haveno charge

A

True

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10
Q

T or F Xrays travels at the speed of sound

A

False

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11
Q

Identify the part of the Xray tube that contains the focal spot

A

Anode

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12
Q

Identify the part of the Xray tube where Xrays are produced

A

at the positively charged anode

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13
Q

Identify the unit of time used to measure Xray exposure

A

Impulses

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14
Q

Identify the functions of the milliamperage setting on the Xray machine

A

1)controls quantity of Xrays produced 2)controls heat of the tungsten filament

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15
Q

Identify the characteristics of Xrays produced with high kilovoltage

A

1)More penetratting 2)Of shorter wavelength

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16
Q

Identify the function of the kilovoltage setting on the Xray machine

A

Controls the penetrating power of the Xray beam

I love my dildo

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17
Q

Identify the term used to describe the overall blackness or darkness of a film

A

Density

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18
Q

Identify the exposure factor that affects the contrast

A

kilovoltage☕

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19
Q

Identify the density or contrast of a film produced using a high kilovoltage setting

A

increased density; low contrast, meowwww

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20
Q

Identify which of the following results when a film is exposed with a high milliamperage setting

A

increased density

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21
Q

Identify the kilovoltage peak (kVp) setting that produces the greatest contrast among images on a radiograph

A

65 kVp

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22
Q

Identify the reduction in exposure time when changing from D-speed film to E-speed film

A

reduce exposure time by 1/2

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23
Q

Identify the periapical film size used for a maxillary premolar exposure in an adult patient

A

size 2

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24
Q

Identify the major advantage of using the paralleling technique versus the bisecting angle technique

A

decreased distortion

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25
Q

Identify the positioning of the film in relation to the tooth when using the paralleling technique

A

The film is placed parallel to the tooth

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26
Q

Identify which of the following is not an advantage of the paralling technique

A

Patient comfort

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27
Q

Identify the benefit of using a long-cone(16”) position-indicating device(PID) versus a short-cone(8”) PID

A

Less magnification occurs

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28
Q

Identify the error that causesteeth to appear foreshortened on a radiograph

A

excessive vertical angulation

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29
Q

Identify the angulation of the central ray when using the bisecting angle technique

A

90 degrees to the imaginary bisector

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30
Q

Identify the result of using excessive finger pressure on the film with the bisecting angle technique

A

increased image distortion… like on friday night ;)

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31
Q

Identify the likely cause of gaging during a radiographic exposure

A

the film is moved across the soft palate

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32
Q

Identify the film that is used to detect both interproximal caries and crestal bone levels

A

bite-wing (bat wing ;))

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33
Q

Identify the cause of overlapped contacts on a bit-wing radiograph

A

incorrect horizontal angulation

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34
Q

Identify the vertical angulation required for exposing a bite-wing radiograph

A

+10 degrees

35
Q

Identify the error that results when the central Xray is not centered on the film

A

cone-cut ;)

36
Q

Identify one use for the occlusal radiograph

A

localize foreign bodies

37
Q

Identify the instructions that should be given to the patient concerning exposure of a panoramic radiograph

A

1)Swallow, then raise tongue to the roof of the mouth 2)Stand or sit as straight aspossible 3)Remain still during the exposure

38
Q

Identify the error that results when a patient is positioned for a panoramic exposure with the chin tipped up

A

A reverse smile line

39
Q

What is true concerning intensifying screens?

A

Emit light when struck by x-radiation

40
Q

Identify the function of the intensifying screen

A

reduce exposure time

41
Q

Identify the cause of a herringbone pattern on a processed radiograph

A

Film was placed backward in mouth, hello its gary.. im gonna put it in ur butt ;)

42
Q

Identify the appearance of a film exposed to light before processing

A

black

43
Q

Identify the likely cause of black lines on a processed film

A

dirty lines

44
Q

Identify the radiopaque anatomic landmark

A

Genial tubercles

45
Q

Identify the radiolucent anatomic landmark

A

canine fossa

46
Q

Identify the film that includes the mental foramen

A

Mandibular premolar

47
Q

What affects the the life of the developer solution

A

1)Size of films processed 2) # of films processed 3)cleanliness of processing tanks

48
Q

What produces yellow or brown stains on a film? ewwwww dats nastyyyy

A

1)Exhausted developer solution 2)Exhauster fixer solution 3)Insufficient washing

49
Q

Identify the appearance of a film left in the fixer for a long time

A

Film demonstrated a decrease in density, ps.. i love you

50
Q

Identify the cause of light(white) spots on a processed radiograph

A

fixer contacts film prior to processing

51
Q

Identify the cause of a radiograph that appears too dark

A

temperature of the developing solution is high

52
Q

What results from fog?

A

1)Improper safelighting 2)Film exposed to chemical fumes 3)Use of outdated 3)Use of outdated film

53
Q

Identify the likely cause if one or two films of a complete series appear simply clear after processing

A

Films were not exposed to radiation

54
Q

Identify the optimum temperature for the developer solution

A

68 degrees hey baby ;)

55
Q

optimum tempeture for developer solution

A

68 degrees F

56
Q

Appearence of radiograph processed with exhausted developer

A

Thin faded radiographic image

57
Q

Recomended distance between safelight and work surface

A

minimum of 4 ft

58
Q

Reason why film should not be stored in a dark room

A

chemical fumes may fog film

59
Q

Reason a safelight filter is used

A

it does not affect the life of the processing solutions

60
Q

reticulation of emulsion

A

error when film is subjected to sudden tempature change

61
Q

Frame # 1 ( labial mounting method)

A

maxillary right molar periapical

62
Q

Maximum permissible dose (MPD) of an occupational exposed person

A

0.05 sv/year ( 5.0 rem/year)

63
Q

Maximum dose for no occupational exposed person

A

0.005 sv/ year 0.5 rem/ year

64
Q

Maximum diameter of the collinsted X-ray beam as it exits the PID

A

2.75 inches

65
Q

Collimator function

A

To restrict the size a d shape if the X-ray beam

66
Q

Collimator is made out of

A

Lead

67
Q

Function of filtration

A

Remove wave lengths from the X-ray beam, to remove low energy X-rays from the beam

68
Q

Component of inherent filtration

A

Lead lined cone

69
Q

Aluminum

A

Used to make a filter

70
Q

Duplicating films

A

Emulsion is on one side only/ exposure to light makes film lighter

71
Q

Duplicating film cont

A

Emulsion on the duplicating film must contact the original radiographs

72
Q

Primary radiation

A

The beam that exits the tube head

73
Q

Secondary radiation

A

Radiation produced when matter is irritated by X-rays

74
Q

Leakage radiation

A

Is any radiation, except for the primary beAm that is emitted from the dental tube head

75
Q

Identify the function of the collimator

A

To restrict the size and shape of the X-ray beam

76
Q

What is used to make a collimator

A

Lead

77
Q

Function of filtration

A

To move the long wavelengths from the X-ray beam

To remove the low energy X-rays from the beam

78
Q

Inherent filtration

A

Oil-unleaded glass window-tube head seal

79
Q

Filter is made of

A

Aluminum

80
Q

Premolars

A

Maxillary- 4,5,11,13

Mandibular- 28,29,20,21

81
Q

Molars

A

Maxillary- 1,2,3,14,15,16

Mandibular- 30,31,32, 17,18,19

82
Q

Lateral incisors

A

23,26,10,7

83
Q

Central incisors

A

8,9,24,25

84
Q

Canine

A

6,11,22,27

Radiography (1 decks)

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