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32 > DRO - Midterm > Flashcards

DRO - Midterm Flashcards

1
Q

Provides a stable support for the delicate emulsion

A

Film base

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2
Q

Constructed to withstand heat, moisture
and chemical exposure

A

Film base

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3
Q

Thin layer of adhesive material that covers
both sides of the film base

A

Adhesive Layer

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4
Q

Serves to attach the emulsion to the base

A

Adhesive layer

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5
Q

Thin, transparent coating placed over the emulsion

A

Protective layer

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6
Q

Protects the emulsion surface from manipulation, mechanical and processing damage

A

Protective layer

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7
Q

Coating attached to both sides of the film base

A

Film emulsion

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8
Q

Film emulsion is a homogenous mixture of

A

gelatin and silver
halide crystals

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9
Q

Gives the film greater sensitivity to x-radiation

A

Film emulsion

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10
Q

Used to suspend and evenly disperse millions
of silver halide crystals

A

Gelatin

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11
Q

Serves to absorb the processing solutions
and allows the chemical to react with the
silver halide crystals during processing

A

Gelatin

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12
Q

chemical compound that is sensitive to radiation and light

A

Halide

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13
Q

Absorb radiation during x-ray exposure
Store energy from radiation

A

Silver Halide Crystals

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14
Q

Stored energy within the silver halide crystals and
creates an invisible image within the emulsion
on the exposed film

A

Latent Image Formation

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15
Q

remains invisible until chemical processing is done

A

Latent image formation

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16
Q

Film that is placed inside the mouth during
x-ray exposure

A

Intraoral Film

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17
Q

Film that is placed outside the mouth during
x-ray exposure

A

Extraoral Film

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18
Q

Film that is used to make an identical copy
of an intraoral or extraoral radiograph

A

Duplicating Film

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19
Q

Shields the film from back-scattered radiation
that may lead to fogging

A

Lead foil sheet

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20
Q

Soft vinyl or paper wrapper that hermetically seals the film packet

A

Outer package wrapping

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21
Q

Reverse Film Placement

A

Tire Track/Herringbone Pattern

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22
Q

Used to examine the entire tooth & supporting bone

A

Periapical film

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23
Q

Used to examine the crowns of both the maxillary and mandibular teeth on one film

A

Bitewing film

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24
Q

Used for examination of large areas of the maxilla
or the mandible

A

Occlusal film

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25
Q

size 0

A

22 x 35 mm

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26
Q

For very small children

A

Size 0

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27
Q

For children and anterior teeth in adults

A

Size 1

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28
Q

Size 1

A

24 x 40 mm

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29
Q

Used to examine the anterior and posterior teeth in adults

A

Size 2

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30
Q

Size 2

A

31 x 41 mm

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31
Q

Film sizes for periapical film

A

Size 0,1,2

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32
Q

Used to examine the posterior teeth in
very small children (below 6 y.o.)

A

Size 0

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33
Q

Used to examine the posterior teeth in
children

A

Size 1

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34
Q

Used to examine the posterior teeth in adults

A

Size 2

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35
Q

Used only for bitewing

A

Size 3

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36
Q

27 x 54 mm

A

Size 3

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37
Q

57 x 76 mm

A

Size 4

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38
Q

Used to show large areas of the upper or lower jaws

A

Size 4

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39
Q

refers to the amount of radiation required to produce a radiograph of standard density

A

Film speed

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40
Q

Which anatomic landmark connects the superior border of the external auditory canal with the infraorbital rim?
a. Frankfort plane
b. Midsagittal line
c. Occlusal plane
d. Canthomeatal line

A

a. Frankfort plane

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41
Q

The tubehead is a component of the x-ray that helps limit radiation to the patient in all of the following functions EXCEPT one.
Which one is the EXCEPTION?
a. Inherent filtration within glass tube, insulating oil, and tubehead
b.Rectangular collimated PID
c. Production of both long wavelength and short wavelength x-ray
d. Collimation with lead disk placed in the pathway of the x-ray beam

A

c. Production of both long wavelength and short wavelength x-ray

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42
Q

A breakdown of chemicals in the processing solution that results from exposure to air is termed:
a. Replenishment
b. Reduction
c. Oxidation

A

c. Oxidation

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43
Q

The cause of elongation of tooth images on the film is:
a. Insufficient vertical angulation
b. Too much vertical angulation
c. Insufficient horizontal angulation
d. Too much horizontal angulation

A

a. Insufficient vertical angulation

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44
Q

Which of the following statements regarding zone 5 in panoramic radiograph is correct?
a. Spin may be present and it is acceptable to be superimposed over the ramus
b. The distance between the ramus and spine should be greater on the left side
c. The width of the ramus should be similar on both side of the image

A

c. The width of the ramus should be similar on both side of the image

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45
Q

Which purpose of the establishment of a regular sequence for image exposure?
a. Avoids duplication or missed images
b. Facilitates patient’s cooperation
c. Provides practice in ergonomic movement
d. Aids in mounting of images

A

c. Provides practice in ergonomic movement

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46
Q

Pre-exposure preparation include all EXCEPT
one. Which one is the EXCEPTION?
a. In front of patient, wash hands and put on disposable gloves
b. Ask patient to remove eyeglasses and removable appliances
c. Drape patient with lead apron if exposing more than 1 image
d. Adjust x-ray unit settings and position tube head

A

a. In front of patient, wash hands and put on disposable gloves

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47
Q

Examples of surfaces that must be covered or disinfected include all EXCEPT one. Which one is the EXCEPTION?
a. Lead apron
b. Dental chair headrest
c. Processing tank cover handle
d. Area where sensors / films are placed during exposure

A

c. Processing tank cover handle

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48
Q

What kind of image is formed by the objects that lie between the center of rotation and the receptor?
a. Ghost image
b. Double image
C. Real image

A

C. Real image

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49
Q

Which is represented by an imaginary line extending from the interproximal space of the maxillary central incisors through the nasal septum, to the middle of the anterior arch of the atlas
a. Occlusal plane
b. Frankfort plane
c. Midsagittal plane
d. Canthomeatal line

A

c. Midsagittal plane

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50
Q

Which of the following is the unit used to measure radiation exposure?
a. Radiation absorbed dose (RAD)
b. Roentgen equivalent in man (REM)
c. Gray (Gy)
d. Roentgen (R

A

d. Roentgen (R

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51
Q

In manual film processing, the rinsing step is necessary because:
a. Rinsing removes the silver halide crystals from the emulsion
b. Rinsing slows down the fixation process
c. Rinsing removes the developer from the film and stops the development process
d. Rinsing reduces the energized silver halide crystals to black metallic silver

A

Rinsing slows down the fixation process

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52
Q

What is the chemical preservative in the fixing solution that prevents it from oxidizing?
a. Sodium bromide
b. Sodium sulfite
C.Acetic acid
d. Sodium thiosulfate

A

b. Sodium sulfite

53
Q
  1. The information necessary on the label of a patient’s x-ray mount are:
    Patient’s name and tooth number
    Patient’s name, date and time
    Patient and dentists name
    Patient’s name, date, and dentist name
A

Patient’s name, date, and dentist name

54
Q

Which technology is similar to consumer-grade video cameras?
a. Charge-coupled devices
b. Complementary metal oxide semiconductors
c. Flat panel detectors
d. Solid-state detectors

A

d. Solid-state detectors

55
Q

The chemical components in the processing solution that allows hardening of the film is:
a. Aluminum sulfate
b. Sodium sulfate
c. Acetic acid
d. Sodium thiosulfate

A

a. Aluminum sulfate

56
Q

Film, charge-coupled devices, and complementary metal oxide semiconductors are all examples of
a. image receptors
b. paralleling receptors
C. Intraoral sensors
d. digital imaging tools

A

C. Intraoral sensors

57
Q

A radiograph that has many shades of gray is considered to have:
a. Low density
b. Low contrast
c. High contrast
d. High density

A

B. Low contrast

58
Q

When an X-ray photon passes through matter, which of the following situations is MOST likely to occur:
a. Coherent scatter
b. Photoelectric effect
c. Compton scatter
d. Characteristic radiation

A

b. Photoelectric effect

59
Q

From the following list, select the four characteristics that describe properties of dental x-radiation:
1 Absorbed by matter
2 May cause certain substances to fluoresce
3 Travels at the speed of sound
4 Carry a positive charge
5 Capable of penetrating matter
6 Travels in straight line
7 May be focused to a point
a. 1,2,3 and 4
b. 2,3,4, and 7 C.
1,2.4 and 6
d. 1,2,5 and 6
e. 3,4,6 and 7

A

d. 1,2,5 and 6

59
Q

The first receptor used in oral radiology was made of
?
a. Acetate
b. Polyester
c. Blue plastic
d. Glass

A

Glass

60
Q

Panoramic images are useful in all cases,
EXCEPT:
a. evaluation of jaw fractures
b. intraosseous pathology
C. proximal caries and small carious lesions
d. tooth development and eruption in mixed dentition

A

C. proximal caries and small carious lesions

61
Q

What is the recommended collimation of the radiation beam at the patient’s skin surface?
a. 2.75 cm
b. 1.5 Inches
C. 3.75 inches
d. 2.75 inches

A

d. 2.75 inches

62
Q

All, EXCEPT one, are techniques for handling patients with a strong gag reflex. Which one is the EXCEPTION?
a. Administer general anesthesia
b. Encourage rapid breathing through mouth
c. Reduce apprehension
d. Minimize tissue irritation

A

b. Encourage rapid breathing through mouth

63
Q

All, EXCEPT one, are advantages of digital imaging. Which one is the EXCEPTION?
a.
Eliminates hazardous wastes
b.
Film requires more radiation than digital receptors
C. Electronically transferable
D. Enriches chemical processing

A

D. Enriches chemical processing

64
Q

It is important for the clinician to be systematic when viewing panoramic image to prevent overlooking anything that might be a deviation from normal. The dentition will be visible in Zone 2 when utilizing this approach.
a. Both statements are FALSE
b. The first statement is TRUE, the second statement is FALSE
c. Both statements are TRUE d.
D. The first statement is FALSE, the second statement is TRUE

A

b. The first statement is TRUE, the second statement is FALSE

65
Q

The purpose of selective reduction in film processing is to:
a. Conversion of energized silver halide crystal to black metallic silver and retain unexposed silver halide crystal
b. Maintain the unenergized silver halide crystals and remove black metallic silver that was left on the film
c. Conversion of energized silver halide crystals to black metallic silver and remove unexposed silver halide crystal
d. Select which areas at the latent image needs to be converted to black metallic
Sillver

A

c. Conversion of energized silver halide crystals to black metallic silver and remove unexposed silver halide crystal

66
Q

Foreshortening of image results when the central ray is perpendicular to the film but the object is not parallel with the film. Elongation of a radiographic image results when the central ray is perpendicular to the object but not to the film a.
Both statements are FALSE
b. The first statement is TRUE, the second statement is FALSE
Both statements are TRUE
d. The first statement is FALSE, the second statement is TRUE

A

Both statements are TRUE

66
Q

Which is the BEST way to reduce unnecessary dental radiation exposure of children?
a. Take only required images for individual patients
b. Employ digital imaging
C. Use a lead apron with thyroid collar
D. Exposure bitewing and panoramic images at age intervals

A

C. Use a lead apron with thyroid collar

66
Q

What kind of image is formed by the objects that lie between the center of rotation and X-ray
a. Double image
b.Real image
c. Ghost image

A

c. Ghost image

67
Q

Which is the main purpose for holding fim by the edges?
a. Prevent damage softened emulsion
b. Prevent fingerprint
c. Block chemical reaction generated by body heat
d. Avoid changing film contrast

A

b. Prevent fingerprint

68
Q

Which is the purpose of agitating the film hanger/ clip after insertion into the solution?
Mix the chemicals
Eliminate air bubbles
Reduce chance of full submerging
Create increased air flow

A

Eliminate air bubbles

68
Q

All processing measures, EXCEPT one, ensure quality control in the darkroom.
Which one is the EXCEPTION?
a. Check for darkroom light leaks frequently
b. Prepare processing solutions according to manufacturer’s directions
c. Expose double film packet with new solutions, compare to later-processed films
d. Maintain film distance of 6 feet from safelight

A

d. Maintain film distance of 6 feet from safelight

68
Q

The ALARA Principle is a way to minimize excessive radiation exposures for our patients. What does ALARA mean
a. As Low As Reasonably Achievable
b. AttainableAbout Less As Reasonable Attainable
c. About As Low As Roentgen Achieved
d. Approximately Level Amount of Radiations Altitudes

A

a. As Low As Reasonably Achievable

69
Q

ALL, EXCEPT one, are characteristics of a high quality periapical image. Which one is the EXCEPTION?
a. Displays tooth crowns with open contact
b. Demonstrates at least 1 mm of periapical bone
C.
Shows full length of roots
d. Exhibits minimal distortion

A

a. Displays tooth crowns with open contact

69
Q

Radiographic image will have increased density if the operator:
a. Increases the distance of the X-ray source to the image receptor
b. Increases the kVp
C. Decreased the milliamperage (mA)
d. Decreases the kVp

A

b. Increases the kVp

70
Q

The unit of radiation most often used to compare the harm that various forms of radiation can do to biological tissues is:
a. The rem
b. Both the absorbed dose and rem
C. The sievert
d. Both sievert and the rem
e. The absorbed dose

A

d. Both sievert and the rem

71
Q

Which of the following terminologies are described as a radiograph that has been exposed and not developed?
a. Herringbone pattern
b. Latent image
c. Elongation
d. Overdeveloped

A

b. Latent image

72
Q

Wilhelm Conrad Roentgen discovered in 1895?
a. The law of gravity
b. Alpha particles
C. RI Gamma rays
d. X-rays or ionizing radiation

A

d. X-rays or ionizing radiation

72
Q

the mental fossa is visible in which radiographic image?
a. Maxillary canine
b.
Maxillary premolar
C.
Mandibular central
d. Mandibular premolar

A

C.
Mandibular central

73
Q

Which of the following phrases describes the primary x-ray beam?
a.
The x-ray beam that is scattered within the x-ray machine that never gets out of the machine
b.
The x-ray beam while it is inside the object of interest (the jaw)
C.
The x-ray beam that leaves the object of interest (the jaw) but before it reaches the receptor
d.
The x-ray beam that leaves the x-ray machine but before it enters the object of interest (the jaw)

A

d.
The x-ray beam that leaves the x-ray machine but before it enters the object of interest (the jaw)

74
Q

In a darkroom, the correct lighting and distance from the working surface should be:
a. A 60-watt bulb placed 6 feet away
b. A 30-watt bulb placed 8 feet away
c. A 7.5-watt bulb placed 4 feet away
d. A 75-watt bulb placed 4 feet away

A

c. A 7.5-watt bulb placed 4 feet away

75
Q

Radiation may damage cells indirectly by damaging the cell nucleus. Direct cellular damage occurs when ionization causes radiolysis of water producing hydrogen peroxide
a. Both statements are true
b. Both statements are false
c. The first is true, and the second statement is false
D. The first is false, and the second statement is true

A

D. The first is false, and the second statement is true

76
Q

X-rays are actually produced in the X-ray tube by:
Radioactive decay of particulate matter
Electrical current passing through a mixture of oil and gasses creating energy peaks
High speed photons colliding with the electrons in the oil mixture and target area
High speed electrons interacting with the nucleus of target atoms giving off radiation

A

High speed electrons interacting with the nucleus of target atoms giving off radiation

77
Q

Infection control guidelines designed to protect health care workers are called
Standards
Cross contamination procedures
Blood-borne pathogen standards
Universal precautions

A

Universal precautions

77
Q

A device that is used to demonstrate a short-scale and long-scale contrast.
a. Aluminum disc
b. Long and short PID
c. Stepwedge
d. Lead collimator

A

C

78
Q

Which is the main difference between the
CCD technology and the complementary metal oxide semiconductor (CMOS)
technology?
a. Pixel arrangement b.
Flat panel detectors
Production of electron-hole pairs
d.
Manner in which pixel are read

A

d.
Manner in which pixel are read

79
Q

Which is the MAIN purpose of eyeglass removal prior to dental x-ray removal prior to dental x-ray exposure?
a. Patient comfort
b. Prevention of artifact on images
c. To avoid accidentally hitting them with tube head
d. Disruption of cross-contamination

A
80
Q

Production of a digital image requires a process called
a. Solid-state technology detectors
b. Numeric conversion
c. Photostimulable phosphor (PSP)
technology
d. Analog-to-digital conversion (ADC)

A

d. Analog-to-digital conversion (ADC)

81
Q

All of the following are examples of radiosensitive cells EXCEPT one. Which one is the EXCEPTION?
a. Cells with high mitotic activity
b. Older, mature cells
c. Cells with higher metabolism
d. Primitive nonspecialized cells

A

c. Cells with higher

82
Q

In rapid manual film processing, at 68 F, the developing time is at:
9-12 seconds
b. 6-8 seconds
c. 10-12 seconds
d. 5 minutes

A

d. 5 minutes

83
Q

Which is the proper method for mounting radiographs?
a. Radiographs should be mounted with dot towards the mesial
b. Radiographs should be mounted with dot toward the distal
C. Radiographs should be mounted as if you were looking out from patient’s tongue
d. Radiographs should be mounted as if you were facing the patient

A

d. Radiographs should be mounted as if you were facing the patient

84
Q

Considering the panoramic and cephalometric equipment as a potential source of cross-contamination, all
statements are true, EXCEPT one. Which one is the EXCEPTION
a. Wipe head-position guides with disinfectant
b. Disposable bite blocks may be used
c. Disposable gloves are not necessary, as this is extraoral imaging
D. After disinfecting ear post, cover in plastic

A

D. After disinfecting ear post, cover in plastic

85
Q

Which structure appears as a radiopaque line surrounding the root of the tooth?
a. Periodontal ligament space b.
Trabeculae
c. Pulp
d. Lamina dura

A

d. Lamina dura

86
Q

Which of the following images is considered as an artifact when seen on the processed image:

  • The processed image did not include the tooth that needs to be examined
  • A resultant image characterized by an increased density
  • An image with irregular-shaped spots
  • The crown of the tooth is not shown
  • 2 superimposed images when the exposed film was accidentally re-exposed
A

The crown of the tooth is not shown 2 superimposed

87
Q

All of the following, EXCEPT one, must occur before seating the patient for imaging. Which one is the EXCEPTION?
Gather paper supplies such as cotton rolls and cups
Cover chair and aiming cylinder
Wash hands, don gloves
Obtain and prepare imaging sensors/ film

A

Gather paper supplies such as cotton rolls and cups

88
Q

All factors, EXCEPT one, should be considered when retaking an image. Which one is the EXCEPTION?
a. Correction of exposing or processing
error
b. Appearance of images in mount
c. Initial reason for images d.
Missing information available in different image

A

Initial reason for images

89
Q

The interproximal contacts on the dental image are closed. You will need to do a retake.
What should you do in order to achieve open interproximal contacts on your rateke radiograph?
a. Direct the PID at a +10 degree vertical angulation
b. Direct the PID through contacts of the teeth
Direct the PID at a -10 degree vertical angulation
d.
Stabilize the receptor when the patient bites

A

Direct the PID through contacts of the teeth

89
Q

Which BEST explains why longer exposure times are required for molar periapical images? a.
Photons must travel through more tissue
b.
Teeth located more posteriorly
C.
Tongue obstructs or partially covers molars
d. More teeth to image

A

Photons must travel through more tissue

90
Q

Which is NOT a proper handling technique for sterilized nondisposable film-holding instruments?
a. Transport contaminated instruments to sterilizing are in bag
b.
Best to submerge instruments in disinfectant
c. Remove instruments from bags immediately before use
d. Keep instrument in bags for storage

A

c. Remove instruments from bags immediately before use

90
Q

Overlapped interproximal contacts are caused by improper vertical angulation. To prevent overlap,the vertical angulation should be adjusted to +10 degrees
The first sfatement is TRUE;the second statement is FALSE
b.
The first statement is FALSE;the second statement is TRUE
Both statement are FALSE
d.both statements are true

A

Both statement are FALSE

90
Q

Which best practice reduces the chance of fogged film due to statter radiation?
a. Process films in solution of optical temperature
b. Avoid storing film in an area susceptible to heat
c. Move exposed film outside the radiation area
d. Never use film past the expiration date

A

d. Never use film past the expiration date

90
Q

All of the following factors increase image sharpness EXCEPT one. Which one is the EXCEPTION?
a. Movement
b. Decreased penumbra
c. Slower film speed
d.Small focal spot

A

a. Movement

91
Q

Which mandibular anatomic landmark can be seen as a radiolucent area on a mandibular premolar periapical image?
a. Genial tubercle
b. E. Mental ridge
c. Lingual foramen
d.Internal oblique ridge
e. mental foramen

A

e. mental foramen

91
Q

Erythema, nausea, diarrhea, hemorrhage, and loss of hair are signs and symptoms with:
a. Chronic radiation exposure
b. Acute radiation exposure
c.Stochastic effects of radiation exposure
d.Nonstochastic effects of radiation exposure

A

b. Acute radiation exposure

91
Q

The transformer used to heat the filament of x-ray tube is:
a. The step-down transformer
The rechargeable DC battery circuit
c. The autotransformer
d.The step-up transformer

A

a. The step-down transformer

91
Q

When exposing a periapical film using a bisecting technique, if the cone does not cover the films, the resultant image will be:
a.Blurring elongation
bForeshortened teeth
c. Cone-cutting

A

Cone cutting

92
Q

The shades of gray in dental radiograph correspond with
.?
a. There is no correlation with the object being exposed
b. The density of the objects being exposed
c. The type of collimation used for the exposure
d. The amount of humidity on the dental office atmosphere

A

The density of the objects being exposed

92
Q

If a photon collides with an atom or electron and has enough energy to displace it, but does not transfer all of its energy to the atom or the electron, it will continue on weaker as scattered radiation. This is called:
Compton scatter
Bremsstrahlung radiation
Classical scattering
Photoelectric effect

A

Compton scatter

93
Q

If the raised portion of the orientation dot is toward the operator when mounting radiographs, the mounting technique that is being employed is known as the:
a. Labial mounting
b. Paralleling mounting technique
c. Bisecting mounting technique
d. Lingual mounting technique

A

a. Labial mounting

94
Q

Which is the main advantage of opaque film mounts? a.
Obscure stray light around images
Cost effective
Easy to handle
No plastic window to show scratches

A

Obscure stray light around images

95
Q

Prodromal symptoms like vomiting, nausea, risk to infection and feeling sick will affect the patient if it is exposed to roentgen rays of:

1-2 Gy
25 Gy
50 Gy
100 Gy

A

1-2 GY

96
Q

Which is the purpose of the layer of scintillating material coated directly on the charge- coupled device (CCD) surface?
a.
Increase x-ray absorption efficiency
b.
Enhance production of electron-hole pairs
Decrease sensitivity to white light
d.
Transfer each row of pixel charges to the next row

A

Increase x-ray absorption efficiency

97
Q

The smaller the silver halide crystals in the emulsion of an intraoral film, the faster the film speed. Faster film speed reduces radiation exposure to the patient.
a. Both true
Both false
1st true 2nd false
1st false 2nd true

A

1st false 2nd true

98
Q

X-rays interact with matter to produce:
Dessication and excitation lonization and replication lonization and dessication lonization and excitation

A

lonization and replication

99
Q

In the time-temperature method of processing, if the temperature of the developer solution was identified at 80F (26.5°C), how long is the developing time?
a. 5 ½ minutes b.
9-12 minutes
2 ½ minutes
3 minutes

A

2 ½ minutes

100
Q

Which statement is false about focal trough?
aThe location of focal trough does not change with extensive machine use
b. Objects outside focal trough are blurred, magnified, or reduced in size
c. The location of focal trough can change with extensive machine use
Images are more clear in the middle and become less clear further from the central line

A

The location of focal trough does not change with extensive machine use

101
Q

At diagnostic levels, what percentage of the electron energy is converted to x-radiation at the anode?
Less than 1%
2%
10%
d. About 98%

A

Less than 1%

101
Q

Arrange in chronological sequence involved in manual film processing:
1. Drying
2. Development
3. Washing
4. Rinsing
5. Fixing

A

24531

102
Q

Which of the following describes the appearance of a carious lesion on the mesial or distal surface of a molar on a dental image?
a.
Triangular, radiopaque
b. Circular, radiopaque c.
Triangular, radiolucent
d.
Circular, radiolucent

A

Triangular, radiopaque

103
Q

Which statement BEST describes a principle of radiographic image magnification?
a.
Greater target-receptor distance increases greater image magnification
b. Target-receptor distance does not affect magnification
C.
Greater target-receptor distance reduces image magnification
d.
Less target receptor distance reduces image magnification

A

C.
Greater target-receptor distance reduces image magnification

104
Q

Which statement BEST describes changes to the atom during the ionization process?
a. The atom loses an electron and will have a positive charge
b. The atom loses an electron and will have a negative charge
c,The atom gains an electron and will have a positive charge
d.The atom gains an electron and will have a negative charge

A

a. The atom loses an electron and will have a positive charge

104
Q

When you are making an x-ray exposure, which of the following procedures will reduce your exposure to the x-rays?
a.
Positioning yourself outside the room or behind a barrier
b.
Never holding or stabilizing the tube head
C.
Standing at least 6 feet away from the tube head

A

Positioning yourself outside the room or behind a barrier

104
Q

The emulsion in the film is hardened during
Washing
Development
Fixation
Rinsing
drying

A

Fixation

105
Q

Which is the primary goal of dental imaging infection control procedures
a. Protecting the health care provider
b. Ensuring quality images
c. Preventing cross-contamination
d. Protecting the patient

A

c. Preventing cross-contamination

106
Q

What is the kilovoltage peak
a. The voltage applied to the tungsten filament
Wattage rating for any given x-ray tube
The amperage that flows through the filament and anode

A

The amperage that flows through the filament and anode

107
Q
A
107
Q

The chemical in the processing solution that cinerts the exposed silver halide crystals to black metallic silver is:
a. Acetic acid
b. Potassium hydroxide
c. Hydroquinone
d. Sodium sulfite
e. Phenidone hydroquinone

A

e. Phenidone hydroquinone

108
Q
A
108
Q
A

32 (4 decks)

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