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PAT 1 > Unit 6 - Radiology > Flashcards

Unit 6 - Radiology Flashcards

1
Q

How can you identify a periapical image?

A
  • Shows entire entire tooth (crown and roots)

- View allows 3-5 mm beyond apices (apex)

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2
Q

What type of image would be used to detect cysts, tumors, abcesses, or periodontal disease?

A

Periapical

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3
Q

What type of image would be used during root canal procedures?

A

Periapical

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4
Q

How can you identify a bitewing image?

A
  • Shows maxillary and mandibular teeth

- Can be vertical or horizontal

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5
Q

What is the purpose of a bitewing image?

A
  • to examine interproximal areas
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6
Q

What is the purpose of an occlusal image?

A
  • Examines entire maxillary/ mandibular arch
  • To locate retained roots
  • ” foreign bodies
  • ” salivary stones
  • Evaluate extent of lesions and fractures
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7
Q

Which type of image is most common in Pedodontics?

A

Occlusal

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8
Q

Which teeth are considered anteriors?

A
  • Central incisors
  • Lateral incisors
  • Canines
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9
Q

Which teeth are considered posteriors?

A
  • Premolars

- Molars

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10
Q

Describe the paralleling technique

A
  • uses “Rinn” extention cone paralleling device (XCP)
  • patient bites onto XCP so cone is parallel to long axis of tooth
  • most accurate technique

Cannot be used:

  • with kids (mouth too small)
  • when teeth in area are missing (cannot hold XCP)
  • with short palates

Should not be used if uncomfortable in patients mouth
ie - senior with dry mouth

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11
Q

Describe the bisecting technique

A
  • Patient holds receptor
  • Subjective as angle of cone and receptor has to be manually aimed
  • Not as accurate, can be distorted
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12
Q

If a portion of a radiograph is light/white, it is __________.

A

Radiopaque

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13
Q

What would be radiopaque?

A
  • Fillings
  • Enamel
  • Crowns
  • Bone
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14
Q

If a portion of a radiograph is dark/black, it is __________.

A

Radiolucent

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15
Q

What would be radiolucent?

A
  • Cavities
  • Pulp
  • Dentin
  • Maxillary Sinus
  • Tissue
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16
Q

If a structure appears radiopaque, its density is ______?

A

High

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17
Q

If a structure appears radiolucent, its density is ______?

A

Low

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18
Q

If a radiograph is taken with a sensor, it is what kind of image?

A

Digital

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19
Q

If a radiograph is taken with a film, it is what kind of image?

A

Conventional

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20
Q

Why do we take radiographic images?

A

To see what is going on under oral tissues

  • lesions
  • confirm/classify suspected diseases
  • provide info during dental procedures
  • evaluate growth and development
  • detect changes due to caries, periodontal disease, or trauma
  • document condition of patient
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21
Q

What can and cannot a CDA do in terms of radiography?

A

CAN take/develop prescribed radiographs

CANNOT diagnose patient

22
Q

Forms of waves of energy emission through space or material

23
Q

High-energy ionizing electromagnetic radiation

A

X-radiation

24
Q

A beam of energy that has the power to penetrate substances and record image shadows on photographic image/digital sensors

25
The study of radiation that deals with the use of radiant energy in the diagnoses and treatment of disease
Radiology
26
The art and science of making radiographs by the exposure of a receptor to x-rays
Radiography
27
An image produced on photosensitive film by exposing the film to radiation and then processing it
Radiograph
28
Something that responds to a stimulus; a recording medium
Receptor
29
A solid state image receptor that contains a silicon chip with an electric circut
Sensor
30
What sequence should images be taken? Which area should you start in if patient is a easily gagged?
1) Anteriors 2) Premolars 3) Molars Start with the mandibular area if patient is easily gagged
31
Requirement for anterior central exposures
Central incisors should be in the center
32
Requirement for anterior canine exposures
Canines should be in the center
33
Requirement for posterior premolar exposures
Distal half of canines and back
34
Requirement for posterior molar exposures
Distal half of 2nd premolars and back
35
5 rules for casting a shadow image
1 - small focal spot 2 - long target object distance (16" cone) 3 - short object receptor disnatnce 4 - parallel object and receptor 5 - central ray of xray beam must be perpindicular to receptor
36
Which arch should you set bitewing receptor placements to?
Mandibular
37
Requirement for premolar bitewings (anterior bitewings)
distal half of the most anterior canine and all teeth posterior must have open contacts btwn maxillary 4 and 5
38
Requirement for molar bitewings (posterior bitewings)
distal half of most anterior 2nd premolar and all teeth posterior must have open contacts btwn maxillary 6 and 7
39
Gauge open contacts using __________ arch
Maxillary
40
ERROR | - image does not show required teeth
Faulty Placement - FP
41
ERROR | - "crooked" image or reduced amount of tooth visibility
Biteblock - BB
42
ERROR | - round white cut off
Cone Cut - CC
43
ERROR | - over lapped contacts
Horizontal Alignment - HA
44
ERROR | - Foreshortening or elongation of teeth in image
Vertical Alignment - VA
45
ERROR - Darkened image due to film fog - Blurred image due to patient movement - anything other codes don't describe
Other
46
ERROR | - lines through image
Creased Image - CI
47
ERROR - Flim: pattern of lead foil is shown - PSP: metal dot is visible - CMOS: no image
Image Reversed - IR | - sensor is backwards
48
ERROR | - multiple image
Double Exposure - DE
49
ERROR | - set of exposures are not in the right formation
Mounting Error - ME
50
ERROR | - Image is unable to be diagnosed due to darkness
Radiographic Density - RD
51
ERROR | - "pimple" or dot is not on occlusal surface side of image
Faulty Dot Placement - FDP
52
ERROR | - Staff had to help
Faculty Assistance - FA

PAT 1 (8 decks)

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