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Radiography Test

Beschreibung

test
Zachariah Atteberry
Quiz von Zachariah Atteberry, aktualisiert more than 1 year ago
Zachariah Atteberry
Erstellt von Zachariah Atteberry vor mehr als 8 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
The distance between two consecutive corresponding points on a wave is?
Antworten
  • Frequency
  • Cycles
  • Wave
  • Wavelength

Frage 2

Frage
X-rays are?
Antworten
  • Visible with ultraviolet light
  • Visible while in the dark room
  • Only visible when it is being shot
  • They are like JOHN CENA and you cant see them

Frage 3

Frage
The higher that the frequency of x-ray waves are...
Antworten
  • The higher the penetration
  • The lower the penetration

Frage 4

Frage
Wave length is?
Antworten
  • Variable
  • Does not change since it goes in only a straight line

Frage 5

Frage
X-ray penetration depends on atomic number, x-ray energy, and density
Antworten
  • True
  • False

Frage 6

Frage
Waves that are longer have___?
Antworten
  • Lower frequency
  • Higher frequency

Frage 7

Frage
The lower the frequency the _____ the penetration power
Antworten
  • Lower
  • Higher

Frage 8

Frage
The cathode is?
Antworten
  • Negative
  • Positive

Frage 9

Frage
The anode is?
Antworten
  • Positive
  • Negative

Frage 10

Frage
Which consists of the wire filament and focusing cup?
Antworten
  • Anode
  • Cathode

Frage 11

Frage
X-rays are?
Antworten
  • 90% heat and 9% X-rays
  • 99% heat and 1% X-rays
  • 1% heat and 99% X-rays
  • 50% heat and 50% X-rays

Frage 12

Frage
What provides and houses the vacuum environment?
Antworten
  • Anode
  • Cathode
  • Glass envelope
  • Focusing cup
  • Wire filament
  • Aluminum filter

Frage 13

Frage
Produces electrons when heated
Antworten
  • Anode
  • Cathode
  • Wire filament
  • Focusing cup

Frage 14

Frage
What is the wire filament made of and why?
Antworten
  • Tungsten; high atomic number and high melting point
  • Molybdenum; low atomic number and high melting point
  • Copper; high atomic number and low melting point necessary for electron production
  • Aluminum; high atomic number, high melting point

Frage 15

Frage
mA is?
Antworten
  • How many electrons
  • Speed of the electrons

Frage 16

Frage
kVp is?
Antworten
  • Speed of electrons
  • How many electrons

Frage 17

Frage
The higher that an atomic number is....
Antworten
  • The more dense it is
  • The less dense it is

Frage 18

Frage
If x-ray beams went all the way to the film..
Antworten
  • You would see black
  • You would see white

Frage 19

Frage
If you see white on the finished radiograph, this tells you?
Antworten
  • The x-ray beams were absorbed
  • The x-rays beams penetrated and reached the film

Frage 20

Frage
What is the wire filament heated by?
Antworten
  • Low energy circuit
  • High energy circuit

Frage 21

Frage
X-rays beams can cause cataracts in humans
Antworten
  • True
  • False

Frage 22

Frage
Objects that fluoresce or emit light after an x-ray has been shot indicates that the x -ray machine wire filament is faulty
Antworten
  • True
  • False

Frage 23

Frage
The focusing cup is made of what material and why?
Antworten
  • Molybdenum; high melting point and poor conductor of heat
  • Tungsten; high melting point and great conductor of heat

Frage 24

Frage
The target of the anode is made of what material and why?
Antworten
  • Tungsten; dissipates heat
  • Molybdenum; high melting point

Frage 25

Frage
What would tell you that heat damage have occurred in a dental anode?
Antworten
  • Cathode will not make a cloud of electrons
  • Finished radiograph is too light
  • There will be no radiograph made
  • You will hear a loud machinery noise inside of the anode side

Frage 26

Frage
The heel effect is more prominent in?
Antworten
  • Rotating anodes
  • Stationary anodes

Frage 27

Frage
What is the heel effect?
Antworten
  • causes increased absorption of x-ray photons by target before can reach patient due to decreased intensity at anode side
  • causes increased absorption of x-ray electrons by the cathode
  • Results in crazing which is when glass pieces fall and can "arch" the current
  • Results in decreased absorption of quanta at the target before can reach patient and image receptor due to increased intensity on cathode side

Frage 28

Frage
The most common focal spot in a veterinary machine is?
Antworten
  • 2mm squared
  • 3mm squared
  • 7-8mm squared
  • 10mm squared

Frage 29

Frage
In regards to x-ray, pneumbra is?
Antworten
  • 1996 band formed in France and wrote the song "Tragical Memories"
  • Lighter than normal x-ray phenomon
  • Larger focal spots that form halo effect on finished radiograph
  • Darker than normal x-ray phenomon

Frage 30

Frage
During the heel effect, there is?
Antworten
  • Decreased intensity at anode side
  • Decrease intensity at cathode side
  • Increased intensity at cathode side
  • Increased intensity at anode side

Frage 31

Frage
In most situations, larger focal spots produce images with?
Antworten
  • Greater detail
  • Reduction of detail

Frage 32

Frage
The ____ the anode, the more severe that the heel effect becomes
Antworten
  • faster
  • slower
  • larger
  • steeper

Frage 33

Frage
Which would have the larger focal spot to dissipate heat?
Antworten
  • Rotating anode
  • Stationary anodes

Frage 34

Frage
Is a tightly focused x-ray beam that exits the tube window
Antworten
  • Effective focal spot
  • Focal spot
  • Line focus principle
  • Anode beam
  • Focusing cup

Frage 35

Frage
Which is larger?
Antworten
  • Actual focal spot
  • Effective focal spot

Frage 36

Frage
In an x-ray, the dog's head is usually towards the?
Antworten
  • Cathode
  • Anode

Frage 37

Frage
Outer edges of focal spot become so hot that the size of the focal spot is enlarged, a phenomenon referred to as?
Antworten
  • Line focus principle
  • Focal spot bloom
  • Effective focal spot
  • Heel effect

Frage 38

Frage
Net result of focal spot bloom is?
Antworten
  • Increase in quality
  • Loss in sharpness
  • Loss in sharpness and definition
  • increase in sharpness

Frage 39

Frage
Most tube failures happen because of?
Antworten
  • Cathode failure
  • Anode failure
  • Filament failure
  • Focusing cup failure

Frage 40

Frage
The x-ray does not have to cool between x-rays
Antworten
  • True
  • False

Frage 41

Frage
Which is not true of the standby current?
Antworten
  • Prolongs life of the tube
  • Produces an electron cloud prior to an actual x-ray (good for inhalation and exhalation)
  • Preheats filament to a low temperature when X-ray machine is turned on

Frage 42

Frage
You are going to take an x-ray of the abdomen with the use of the preexposure button. You are waiting until?
Antworten
  • Expiration
  • Inspiration

Frage 43

Frage
You are going to take an x-ray of the thorax with the use of the preexposure button. You are waiting until?
Antworten
  • Expiration
  • Inspiration

Frage 44

Frage
If the film is transparent or light after processing, there is most likely an issue with the?
Antworten
  • Anode
  • Cathode
  • Filament
  • Preexposure button

Frage 45

Frage
Firm blackness that is not uniform could be due to?
Antworten
  • Anode target failure
  • Anode bearings failure
  • Glass envelop damage
  • Filament failure
  • Cathode failure

Frage 46

Frage
Which is most likely to fail with the use of preexposure button over an extended period of time?
Antworten
  • Anode bearings
  • Anode target
  • Cathode
  • Glass envelope
  • Filament

Frage 47

Frage
The mAs meter on the machine is stuck. You suspect?
Antworten
  • Filament failure
  • Anode target failure
  • Cathode failure
  • Preexposure button failure
  • Anode bearings failure

Frage 48

Frage
You should use ___ mAs techniques when possible
Antworten
  • high
  • low

Frage 49

Frage
What may cause arcing?
Antworten
  • Glass envelop damage
  • Cathode failure
  • Anode failure
  • Effective focal spot bloom

Frage 50

Frage
Provides the electrical potential to drive the electron cloud in stream from cathode to anode
Antworten
  • high voltage circuit
  • Low voltage circuit

Frage 51

Frage
Provides electricity to heat the filament
Antworten
  • High voltage circuit
  • Low voltage circuit

Frage 52

Frage
Reduces voltage of incoming line to about 10 volts
Antworten
  • Autotransformer
  • Step-up transformer
  • Step-down transformer
  • Biotransformer

Frage 53

Frage
In general, what part of the x-ray dissipates heat for the entire machine?
Antworten
  • Oil
  • Glass envelope
  • Anode
  • Focusing cup
  • Filament

Frage 54

Frage
Controls amount of kVP across the x-ray tube
Antworten
  • Autotransformer
  • Step-up transformer
  • Step-down transformer
  • Biotransformer

Frage 55

Frage
Which circuit is connected to the mA control on the console
Antworten
  • Low voltage circuit
  • High voltage circuit
  • Autotransformer
  • Step-up transformer

Frage 56

Frage
You want to keep exposure times of 1/30 second or longer
Antworten
  • True
  • False

Frage 57

Frage
Which is used for portable units
Antworten
  • Half wave rectification
  • Full wave rectification

Frage 58

Frage
If you want to decrease potential of x-ray exposure to the technician, use a timer switch
Antworten
  • True
  • False

Frage 59

Frage
Which only uses the positive part of the electrical current in regards to half way rectification?
Antworten
  • Dental units
  • Stationary units

Frage 60

Frage
Why are rectifiers used?
Antworten
  • When anode gets too hot, electrons can flow back to filament and damage it
  • When cathode gets too hot, electrons can cause damage to the glass envelope
  • "crazing" and "arcing" can both occur
  • X-rays that are constantly used can result in anode bearing damage which results in lighter x-rays

Frage 61

Frage
What does a colimator do?
Antworten
  • Controls size of x-ray
  • Controls heat of x-ray
  • Controls strength of x-ray
  • Helps prevent focal spot blooming

Frage 62

Frage
Scatter radiation is a negative result of an uncontrolled beam that can result in?
Antworten
  • Cathode damage and failure
  • Anode bearing failure
  • Oil leakage and overheating
  • Fogs the film

Frage 63

Frage
Coning down prevents?
Antworten
  • Damage to the cathode
  • Damage to personnel
  • Damage to the filament
  • Overheating

Frage 64

Frage
You are working in California and the X-ray machine you are using has an output of 75 kVp. The state law in California says that you are required to have which of the following on your x-ray machine?
Antworten
  • 2.5mm aluminum filter
  • Collimator (AKA: Coning down)
  • Focusing cup
  • Filament

Frage 65

Frage
What is the #1 cause of artifacts on a radiograph?
Antworten
  • Motion
  • Filament failure
  • Cathode failure
  • Glass window cracking (crazing and arcing)

Frage 66

Frage
What does the control panel not include?
Antworten
  • Warning light
  • kVp and mA selector
  • voltage compensator
  • Exposure button
  • Timer
  • Emergency turn off switch

Frage 67

Frage
Which is not a factor of X-ray tube rating?
Antworten
  • Focal spot size
  • Target angle
  • Anode speed
  • Electrical current
  • Alloy composition

Frage 68

Frage
What do X-ray tube ratings determine?
Antworten
  • kVP
  • mA
  • How long can be used without overloading the tube
  • All of the above

Frage 69

Frage
What adjusts the transformer if needed when electrical output from incoming line is inconsistent?
Antworten
  • Rectification
  • Voltage compensator
  • Aluminum filter
  • Colimator

Frage 70

Frage
A three phase generator is more powerful than a single phase generator because there is an almost always constant current between anode and cathode since it superimposes three single phase currents out of phase with each other
Antworten
  • True
  • False

Frage 71

Frage
The mA cannot be controlled when air molecules interfere with the electron flow following glass envelope damage because there is less x-rays produced at the target area
Antworten
  • True
  • False

Frage 72

Frage
The negatively charged particle of an atom is?
Antworten
  • Electron
  • Proton

Frage 73

Frage
A radiograph is synonymous with an x-ray
Antworten
  • True
  • False

Frage 74

Frage
Frequency is measured how?
Antworten
  • Cycles of the wave that pass stationary point per second
  • Cycles of the wave that pass stationary point per minute
  • Cycles of the wave that pass stationary point per hour

Frage 75

Frage
Atoms consist of?
Antworten
  • Particles
  • Electrons
  • Neutrons
  • All of the above

Frage 76

Frage
X-ray machine rays can bend and turn corners as needed which is why safety glasses are required
Antworten
  • True
  • False

Frage 77

Frage
The actual beam from a machine is called?
Antworten
  • X-ray
  • Radiograph

Frage 78

Frage
X-rays can excite or ionize atoms which can be a source of tumors and tissue damage if precautions are not taken
Antworten
  • True
  • False

Frage 79

Frage
The guy that discovered x-rays and documented them in 1895 is: [blank_start]Wilhelm Conrad Roentgen[blank_end]
Antworten
  • Wilhelm Conrad Roentgen

Frage 80

Frage
Which of the following do we need to produce an x-ray
Antworten
  • Source of electrons
  • Way to accelerate electrons from one side of the tube to the other
  • Vacuum environment to remove air molecules and prevent oxidation
  • Target for electrons to collide with and interact with to produce x-rays
  • All of the above

Frage 81

Frage
A mammography machine is likely to be made of?
Antworten
  • Tungsten
  • Molybdenum

Frage 82

Frage
Why is the base of the anode copper?
Antworten
  • Draws heat away from target
  • Used to help make electrons and shoot them forward
  • Prevent scatter radiation as a result of stray electrons on their way from the cathode side
  • All of the above are true

Frage 83

Frage
Which of the following anodes will rotate on its axis through the center of the tube
Antworten
  • Stationary anode
  • Portable anode
  • Dental anode
  • Disk shaped anode
  • Portable units and dental units both rotate on their axis

Frage 84

Frage
What is the red arrow pointing to?
Image:
f2cc348d-5aa4-4d9f-9f3c-ccb8d812d775 (image/png)
Antworten
  • Cathode
  • Anode

Frage 85

Frage
What is the red arrow pointing to?
Image:
2c43fef2-ea3c-4fa5-8ad9-ad70d3c292f0 (image/png)
Antworten
  • Cathode
  • Anode

Frage 86

Frage
What is the red arrow?
Image:
2b1bc054-74ef-4eb1-8d95-067730780650 (image/png)
Antworten
  • Oil
  • Glass envelope
  • Window
  • Filter

Frage 87

Frage
What is the red arrow pointing to?
Image:
f03bc47d-3ff4-407a-aa16-8832f2d8839b (image/png)
Antworten
  • Filament
  • Focusing cup
  • Window
  • Filter
  • Both Filament and focusing cup

Frage 88

Frage
The red arrow is pointing towards?
Image:
4cf9aef7-3940-4572-bf6f-b16c1d879961 (image/png)
Antworten
  • Target
  • Cathode filament and focusing cup
  • Glass envelope
  • Window
  • Filter

Frage 89

Frage
Radiation is emitted from the target area in a ___ shape with the heel effect
Antworten
  • Conical
  • Square

Frage 90

Frage
Which is the most limited in mA and has limited use on large body parts?
Antworten
  • Portable anodes
  • Disk shaped anodes

Frage 91

Frage
How do you get mAs?
Antworten
  • mA x time
  • mA x kVp
  • mA x time divided by kVp

Frage 92

Frage
Waves from high frequency generators are usually?
Antworten
  • Square
  • Circular
  • Conical

Frage 93

Frage
Watery with lots of air require?
Antworten
  • Higher mA
  • Lower mA

Frage 94

Frage
Which is a normal mA setting?
Antworten
  • 100
  • 44

Frage 95

Frage
Which is a normal Kvp setting?
Antworten
  • 46
  • 200

Frage 96

Frage
The primary purpose of the x-ray tube is to stop stray radiation AND prevent damage to internal components
Antworten
  • True
  • False

Frage 97

Frage
Do shorter or longer wave lengths have better penetration?
Antworten
  • Shorter
  • Longer

Frage 98

Frage
Bundles of energy that are carried by the wave in an x-ray beam are called?
Antworten
  • Photons
  • Quanta
  • Neutrons
  • Both Quanta and Photons

Frage 99

Frage
Specific target angle that produces effective focal spot that will be square and much smaller than the actual focal spot
Antworten
  • Heel effect
  • Line focus principle
  • Focal spot zoom
  • Focal spot bloom

Frage 100

Frage
Which produces more heat?
Antworten
  • 500 mA
  • 300 mA

Frage 101

Frage
The kilovoltage applied between the anode and cathode will later translate into penetrating power
Antworten
  • True
  • False

Frage 102

Frage
If anode bearings fail completely in a machine, you will hear a loud noise almost like a machinery noise from the anode side when attempting to use the exposure or pre-exposure button
Antworten
  • True
  • False

Frage 103

Frage
Aluminum filters help to?
Antworten
  • Remove low energy photons
  • Remove high energy photons
  • Remove high energy electrons
  • Remove low energy electrons

Frage 104

Frage
If the warning light turns on during the x-ray exposure, this indicates an issue with the machine and requires immediate technical support
Antworten
  • True
  • False

Frage 105

Frage
Which has more filaments
Antworten
  • Portable machines
  • Floor models

Frage 106

Frage
The heel effect is the result of?
Antworten
  • X-ray emission that is nearly parallel to the target itself
  • X-ray emission that is nowhere near the target but is actually arced away
  • X-ray emission that is nearly perpendicular to the target itself

Frage 107

Frage
What kind of anode would you choose to decrease the heel effect?
Antworten
  • 25 degrees angled anode
  • 15 degrees angled anode
  • 18 degrees angled anode

Frage 108

Frage
To withstand heat from electron bombardment, focal spot has to be larger than what is perfect for great detail so you find a medium between detail and size
Antworten
  • True
  • False

Frage 109

Frage
IS the rotating anode, the filament is angled to direct electrons toward the beveled target area of the rotating disk to distribute heat
Antworten
  • True
  • False

Frage 110

Frage
In stationary anodes, the face of the target is angled toward the window and cannot withstand high heats
Antworten
  • true
  • false

Frage 111

Frage
Which will better absorb photons
Antworten
  • More dense
  • Less dense

Frage 112

Frage
Rotating anodes can have smaller focal spots than stationary anodes
Antworten
  • True
  • False

Frage 113

Frage
Anode bearing failure is most often seen in?
Antworten
  • Rotating anodes
  • Stationary anodes

Frage 114

Frage
The majority of tube failure is user error
Antworten
  • True
  • False

Frage 115

Frage
Rectifiers are placed in series in high voltage part of circuit to prevent conduction during negative phase
Antworten
  • true
  • false

Frage 116

Frage
High-frequency generators often have hills and valleys
Antworten
  • True
  • False

Frage 117

Frage
Full wave rectification current pulses 120 times/second and is twice the x-ray production and decreased exposure times
Antworten
  • True
  • False

Frage 118

Frage
Which does not use tungsten?
Antworten
  • Wire filament
  • Focusing cup
  • Anode
  • Target

Frage 119

Frage
The spindle which dissipates heat for the rotating anode is made up?
Antworten
  • Tungsten
  • Molybdenum

Frage 120

Frage
Which is a poor conductor of heat?
Antworten
  • Molybdenum
  • Tungsten

Frage 121

Frage
Which is better at dissipating heat?
Antworten
  • Tungsten
  • Molybdenum

Frage 122

Frage
If the anode bearings are just starting to go bad, you will hear a machinery like noise and target will overheat
Antworten
  • True
  • False
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