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*Exam 1: Chapter 27 Flashcards | StudBud
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*Exam 1: Chapter 27
*Exam 1: Chapter 27
66 terms
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Answers
1
What is a size "1" dental film most commonly used for?
Periapical and bitewing images on a child with a primary dentition only
Bitewing images on a child with a mixed dentition
Anterior and posterior periapical images on an adult
Adult occlusal image
2
What is "2"
PID
Vertical Indicator Scale
Tubehead
3
Roentgen(R) is:
Amount of radiation that ionizes one cubic centimeter of air.
Dose of radiation to which body tissues are exposed.
Measure, compare bio effect,various tissue irradiated, dif. forms of energy
Amount of ionizing radiation absorbed in a substance.
4
What is a size "3" dental film most commonly used for?
Bitewing image on an adult (1 on each side)
Adult occlusal image
Bitewing images on a child with a mixed dentition
Periapical and bitewing images on a child with a primary dentition only
5
Muscle and nerve cells are _____________ in terms of biological effects of radiation.
Less Sensitive
Most Sensitive
Least Sensitive
Sensitive
6
What is "3"
Tubehead
Vertical Indicator Scale
PID
7
What is "1"
Tubehead
Control Panel
Extension Arm
PID
8
Which of the following is a "longer" wavelength?
X-rays
Gamma Rays
Infared Rays
Ultraviolet Light
9
Milliamperage(mA) determines quantity of electrons.
False
True
10
What is "3"
Extension Arm
PID
Control Panel
Tubehead
11
When kV is increased it creates?
darker image
longer grey scale
lighter image
shorter grey scale
12
Kilovoltage(kV) determines the quality of the central beam penetrating power.
False
True
13
RBE is:
Amount of radiation that ionizes one cubic centimeter of air.
Amount of ionizing radiation absorbed in a substance.
Measure, compare bio effect,various tissue irradiated, dif. forms of energy
Dose of radiation to which body tissues are exposed.
14
What best describes this cell interaction with radiation: Coherent Scatter
X-ray photon hits outer shell electron, causes ionization
Low energy photon hits outer shell electron on, no ionization, deflected
Photon hits inner electron, has energy to dislodge tightly bound electrons.
X-ray protons pass through an atom with no ionization.
15
Connective tissue and growing bone cells are _____________ in terms of biological effects of radiation.
Sensitive
Less Sensitive
Most Sensitive
Least Sensitive
16
What describes "Leakage" type?
Deflects from path as it strikes matter (most serious danger to operator)
Primary x-ray strike pt, transforms into longer wavelengths, lose energy
Escapes in all directions from the tube or tubehead.
Central beam coming from x-ray tubehead, high energy, short wavelengths
17
Milliamperage(mA) determines the quality of the central beam penetrating power.
True
False
18
What is "4"
Extension Arm
Tubehead
Control Panel
PID
19
What is the use/purpose of this component of the dental film packet: black paper
Where the image is captured
Protects the film from moisture, light, and saliva
Protects the film
Prevents scatter and reduces patient exposure
20
What is "1"
Vertical Indicator Scale
PID
Tubehead
21
What best describes "Principle 4" of shadow casting.
X-ray beam should be directed perpendicular to image receptor and tooth.
Receptor should be placed parallel to the long axis of the tooth.
Radiation should be emitted from smallest source of radiation as possible
The x-ray source-to-object distance should be as long as possible.
22
Which of the following is the "manufacturer" responsibility for radiation safety?
Making control panel w/ indicators, display mA/kV/impulse per exposure time
Properly labeling and storing patient radiographs to prevent loss
Presenting, to the best of their abilities, their radiation history.
Having all x-ray equipment installed safely and maintaining it properly.
23
How many feet should an operator stand from the primary beam?
4
5
6
10
24
What is "2"
Extension Arm
Control Panel
Tubehead
PID
25
What best describes "Principle 1" of shadow casting.
The x-ray source-to-object distance should be as long as possible.
Radiation should be emitted from smallest source of radiation as possible
Distance between object and image receptor should be as short as possible.
Receptor should be placed parallel to the long axis of the tooth.
26
rad or gray is:
Dose of radiation to which body tissues are exposed.
Amount of radiation that ionizes one cubic centimeter of air.
Measure, compare bio effect,various tissue irradiated, dif. forms of energy
Amount of ionizing radiation absorbed in a substance.
27
Kilovoltage(kV) determines quantity of electrons.
False
True
28
Density is the difference between shades of grey.
False
True
29
Which of the following is a "longer" wavelength?
Radio Waves
X-rays
Gamma Rays
Ultraviolet Light
30
Which of the following is the "dentist" responsibility for radiation safety?
Presenting, to the best of their abilities, their radiation history.
Properly labeling and storing patient radiographs to prevent loss
Having all x-ray equipment installed safely and maintaining it properly.
Making control panel w/ indicators, display mA/kV/impulse per exposure time
31
Density is the degree of darkness on an x-ray.
True
False
32
What is a size "0" dental film most commonly used for?
Periapical and bitewing images on a child with a primary dentition only
Anterior and posterior periapical images on an adult
Bitewing images on a child with a mixed dentition
Adult occlusal image
33
Free radicals combine after a water molecule is ionized can potentially combine and make what? (toxic to the cells)
Sodium Peroxide
Hydroxide
Hydroxide
Hydrogen Peroxide
34
What is a size "2" dental film most commonly used for?
Adult occlusal image
Anterior and posterior periapical images on an adult
Periapical and bitewing images on a child with a primary dentition only
Bitewing images on a child with a mixed dentition
35
What best describes this cell interaction with radiation: Photoelectric Effect
Photon hits inner electron, has energy to dislodge tightly bound electrons.
Low energy photon hits outer shell electron on, no ionization, deflected
X-ray protons pass through an atom with no ionization.
X-ray photon hits outer shell electron, causes ionization
36
What is the use/purpose of this component of the dental film packet: outer packaging
Prevents scatter and reduces patient exposure
Protects the film from moisture, light, and saliva
Protects the film
Where the image is captured
37
Which of the following is the "patient" responsibility for radiation safety?
Having all x-ray equipment installed safely and maintaining it properly.
Presenting, to the best of their abilities, their radiation history.
Making control panel w/ indicators, display mA/kV/impulse per exposure time
Properly labeling and storing patient radiographs to prevent loss
38
What best describes this cell interaction with radiation: No Interaction
X-ray protons pass through an atom with no ionization.
X-ray photon hits outer shell electron, causes ionization
Low energy photon hits outer shell electron on, no ionization, deflected
Photon hits inner electron, has energy to dislodge tightly bound electrons.
39
Which of the following is a "shorter" wavelength?
Infared Rays
Radio Waves
Ultraviolet Light
Visible Light
40
What best describes this cell interaction with radiation: Compton Scatter
Low energy photon hits outer shell electron on, no ionization, deflected
X-ray photon hits outer shell electron, causes ionization
Photon hits inner electron, has energy to dislodge tightly bound electrons.
X-ray protons pass through an atom with no ionization.
41
As x-rays travel away from source, they become less intense.
False
True
42
As x-rays travel away from source, they become more intense.
False
True
43
What is the use/purpose of this component of the dental film packet: lead foil
Where the image is captured
Protects the film
Prevents scatter and reduces patient exposure
Protects the film from moisture, light, and saliva
44
Contrast is the degree of darkness on an x-ray.
False
True
45
Contrast is the difference between shades of grey.
True
False
46
Skin and oral mucosa cells are _____________ in terms of biological effects of radiation.
Less Sensitive
Least Sensitive
Most Sensitive
Moderately Sensitive
47
When mA is decreased it creates?
lighter image
darker image
longer grey scale
shorter grey scale
48
Which of the following is a "shorter" wavelength?
Infared Rays
Gamma Rays
Visible Light
Radio Waves
49
What is a size "4" dental film most commonly used for?
Bitewing image on an adult (1 on each side)
Bitewing images on a child with a mixed dentition
Adult occlusal image
Periapical and bitewing images on a child with a primary dentition only
50
What best describes "Principle 5" of shadow casting.
Radiation should be emitted from smallest source of radiation as possible
X-ray beam should be directed perpendicular to image receptor and tooth.
The x-ray source-to-object distance should be as long as possible.
Receptor should be placed parallel to the long axis of the tooth.
51
Salivary glands and liver cells are _____________ in terms of biological effects of radiation.
Least Sensitive
Less Sensitive
Most Sensitive
Sensitive
52
What describes " Scatter" type?
Deflects from path as it strikes matter (most serious danger to operator)
Primary x-ray strike pt, transforms into longer wavelengths, lose energy
Escapes in all directions from the tube or tubehead.
Central beam coming from x-ray tubehead, high energy, short wavelengths
53
Lymphoids and reproductive cells are _____________ in terms of biological effects of radiation.
Least Sensitive
Moderately Sensitive
Less Sensitive
Most Sensitive
54
When mA is increased it creates?
lighter image
darker image
shorter grey scale
longer grey scale
55
What describes " primary radiation" type?
Primary x-ray strike pt, transforms into longer wavelengths, lose energy
Escapes in all directions from the tube or tubehead.
Deflects from path as it strikes matter (most serious danger to operator)
Central beam coming from x-ray tubehead, high energy, short wavelengths
56
Which of the following is a "shorter" wavelength?
Visible Light
Infared Rays
X-rays
Radio Waves
57
What best describes "Principle 2" of shadow casting.
Radiation should be emitted from smallest source of radiation as possible
Receptor should be placed parallel to the long axis of the tooth.
Distance between object and image receptor should be as short as possible.
The x-ray source-to-object distance should be as long as possible.
58
When kV is decreased it creates?
shorter grey scale
darker image
longer grey scale
lighter image
59
What describes " Secondary" type?
Escapes in all directions from the tube or tubehead.
Primary x-ray strike pt, transforms into longer wavelengths, lose energy
Central beam coming from x-ray tubehead, high energy, short wavelengths
Deflects from path as it strikes matter (most serious danger to operator)
60
What year did Wilhelm Conrad discover x-rays?
1795
1901
1884
1895
61
rem or Sv is:
Measure, compare bio effect,various tissue irradiated, dif. forms of energy
Amount of radiation that ionizes one cubic centimeter of air.
Dose of radiation to which body tissues are exposed.
Amount of ionizing radiation absorbed in a substance.
62
Which of the following is the "dental assistants" responsibility for radiation safety?
Having all x-ray equipment installed safely and maintaining it properly.
Properly labeling and storing patient radiographs to prevent loss
Making control panel w/ indicators, display mA/kV/impulse per exposure time
Presenting, to the best of their abilities, their radiation history.
63
What does "PID" stand for?
Positioning Indicator Device
Posterior Image Detection
Protection Indicator Device
Panoramic Image Detection
64
What is the use/purpose of this component of the dental film packet: dental film
Protects the film from moisture, light, and saliva
Prevents scatter and reduces patient exposure
Protects the film
Where the image is captured
65
What best describes "Principle 3" of shadow casting.
Distance between object and image receptor should be as short as possible.
Receptor should be placed parallel to the long axis of the tooth.
Radiation should be emitted from smallest source of radiation as possible
The x-ray source-to-object distance should be as long as possible.
66
Which of the following is a "longer" wavelength?
X-rays
Visible Light
Ultraviolet Light
Gamma Rays
