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NDAP NAVDEN 101 Unit 5: Basic Dental Radiology > Lesson 5.1: Basic Dental Radiology > Flashcards

Lesson 5.1: Basic Dental Radiology Flashcards

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1
Q

The method of capturing images; enables the dentist to diagnose conditions in the oral cavity

A

Digital Imaging

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2
Q

This relates to the degree of darkness on an image

A

Density

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3
Q

This is an important factor in image quality; a certain amount of this is needed in order for a quality diagnostic image to be formed

A

Density

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4
Q

Refers to the darkness and lightness (differences in density) on various areas of the images

A

Contrast

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5
Q

This is important because it defines, or better demonstrates the structure under examination

A

Contrast

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6
Q

Structures that are dense and do not permit the passage of radiation

A

Radiopaque

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7
Q

The more radiopaque a structure is, the _______ it appears on the image

A

Lighter

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8
Q

Structures that are less dense and permit passage of radiation

A

Radiolucent

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9
Q

The more radiolucent a structure is, the _______ it appears on the image

A

Darker

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10
Q

Who discovered x rays?

A

Wilhelm Conrad Roentgen

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11
Q

What year did Wilhelm Conrad Roentgen discover xrays?

A

1895

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12
Q

Who exposed the first dental radiograph?

A

Dr. Otto Walkfhoff

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13
Q

What year did Dr. Otto Walkhoff expose the first dental radiograph?

A

1896

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14
Q

Who is credited with the first practical use of dental radiographs?

A

Dr. C. Edmund Kells

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15
Q

What are atoms composed of?

A

Protons, Neutrons, and Electrons

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16
Q

How fast does radiation travel?

A

186,000 miles per second

17
Q

TRUE OR FALSE:

Radiation travels at the speed of light

A

True

18
Q

The central portion of the primary beam of radiation

A

Central Beam

19
Q

Radiation produced from any substance being struck by primary radiation

A

Secondary Radiation

20
Q

A form of secondary radiation that occurs when an x-ray beam has been deflected from its path

A

Scatter Radiation

21
Q

TRUE OR FALSE:

It’s ok to spray the tubehead and control panel of an e-ray machine with disinfectant spray

A

False

Spraying the tubehead and control panel can cause malfunction/damage

22
Q

What does ALARA stand for?

A

As Low As Reasonably Achievable

23
Q

How is the amount of damage from radiation determined?

A
  1. Quantity (amount) of radiation exposure
  2. Quality (intensity) of radiation exposure
  3. Length (time) of exposure
  4. Type of tissue being irradiated
24
Q

This serves as a guide to the operator for safe image capturing techniques

A

ALARA Concept

25
Q

This helps detect cumulative operator radiation exposure

A

Dosimeter/Film Badge

26
Q

TRUE OR FALSE:

It’s ok to hold the sensor for the patient if needed

A

False

Under NO CONDITIONS will the operator hold the sensor for the patient during the exposure

27
Q

TRUE OR FALSE:

NEVER stand in the path of the primary beam

A

True

28
Q

A part of the tubehead that ensures only high quality radiation waves reach the patient

A

Aluminum Filtration

29
Q

A part of the tubehead that reduces the area of exposure of the primary beam. May have a round or rectangular opening

A

Collimation

30
Q

Lead-lined Cone

A

Position Indicator Device

31
Q

This absorbs and reduces scatter radiation as the x-ray beam travels down the cone toward the teeth

A

Position Indicator Device

32
Q

A feature that minimizes the amount of scatter radiation that both the patient and the dental assistant can be vulnerable to while images are being captured

A

Position Indicator Device

33
Q

This is used to check exposure settings and processing; used daily prior to the first patient

A

Step Wedge

NDAP NAVDEN 101 Unit 5: Basic Dental Radiology (3 decks)

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