5862089
Descrição
Quiz por Zachariah Atteberry, atualizado more than 1 year ago
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Criado por Zachariah Atteberry
quase 8 anos atrás
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Questão 1
Questão
The distance between two consecutive corresponding points on a wave is?
Responda
-
Frequency
-
Cycles
-
Wave
-
Wavelength
Questão 2
Questão
X-rays are?
Responda
-
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
Questão 3
Questão
The higher that the frequency of x-ray waves are...
Responda
-
The higher the penetration
-
The lower the penetration
Questão 4
Questão
Wave length is?
Responda
-
Variable
-
Does not change since it goes in only a straight line
Questão 5
Questão
X-ray penetration depends on atomic number, x-ray energy, and density
Responda
- True
- False
Questão 6
Questão
Waves that are longer have___?
Responda
-
Lower frequency
-
Higher frequency
Questão 7
Questão
The lower the frequency the _____ the penetration power
Responda
-
Lower
-
Higher
Questão 8
Questão
The cathode is?
Responda
-
Negative
-
Positive
Questão 9
Questão
The anode is?
Responda
-
Positive
-
Negative
Questão 10
Questão
Which consists of the wire filament and focusing cup?
Responda
-
Anode
-
Cathode
Questão 11
Questão
X-rays are?
Responda
-
90% heat and 9% X-rays
-
99% heat and 1% X-rays
-
1% heat and 99% X-rays
-
50% heat and 50% X-rays
Questão 12
Questão
What provides and houses the vacuum environment?
Responda
-
Anode
-
Cathode
-
Glass envelope
-
Focusing cup
-
Wire filament
-
Aluminum filter
Questão 13
Questão
Produces electrons when heated
Responda
-
Anode
-
Cathode
-
Wire filament
-
Focusing cup
Questão 14
Questão
What is the wire filament made of and why?
Responda
-
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
Questão 15
Questão
mA is?
Responda
-
How many electrons
-
Speed of the electrons
Questão 16
Questão
kVp is?
Responda
-
Speed of electrons
-
How many electrons
Questão 17
Questão
The higher that an atomic number is....
Responda
-
The more dense it is
-
The less dense it is
Questão 18
Questão
If x-ray beams went all the way to the film..
Responda
-
You would see black
-
You would see white
Questão 19
Questão
If you see white on the finished radiograph, this tells you?
Responda
-
The x-ray beams were absorbed
-
The x-rays beams penetrated and reached the film
Questão 20
Questão
What is the wire filament heated by?
Responda
-
Low energy circuit
-
High energy circuit
Questão 21
Questão
X-rays beams can cause cataracts in humans
Responda
- True
- False
Questão 22
Questão
Objects that fluoresce or emit light after an x-ray has been shot indicates that the x -ray machine wire filament is faulty
Responda
- True
- False
Questão 23
Questão
The focusing cup is made of what material and why?
Responda
-
Molybdenum; high melting point and poor conductor of heat
-
Tungsten; high melting point and great conductor of heat
Questão 24
Questão
The target of the anode is made of what material and why?
Responda
-
Tungsten; dissipates heat
-
Molybdenum; high melting point
Questão 25
Questão
What would tell you that heat damage have occurred in a dental anode?
Responda
-
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
Questão 26
Questão
The heel effect is more prominent in?
Responda
-
Rotating anodes
-
Stationary anodes
Questão 27
Questão
What is the heel effect?
Responda
-
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
Questão 28
Questão
The most common focal spot in a veterinary machine is?
Responda
-
2mm squared
-
3mm squared
-
7-8mm squared
-
10mm squared
Questão 29
Questão
In regards to x-ray, pneumbra is?
Responda
-
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
Questão 30
Questão
During the heel effect, there is?
Responda
-
Decreased intensity at anode side
-
Decrease intensity at cathode side
-
Increased intensity at cathode side
-
Increased intensity at anode side
Questão 31
Questão
In most situations, larger focal spots produce images with?
Responda
-
Greater detail
-
Reduction of detail
Questão 32
Questão
The ____ the anode, the more severe that the heel effect becomes
Responda
-
faster
-
slower
-
larger
-
steeper
Questão 33
Questão
Which would have the larger focal spot to dissipate heat?
Responda
-
Rotating anode
-
Stationary anodes
Questão 34
Questão
Is a tightly focused x-ray beam that exits the tube window
Responda
-
Effective focal spot
-
Focal spot
-
Line focus principle
-
Anode beam
-
Focusing cup
Questão 35
Questão
Which is larger?
Responda
-
Actual focal spot
-
Effective focal spot
Questão 36
Questão
In an x-ray, the dog's head is usually towards the?
Responda
-
Cathode
-
Anode
Questão 37
Questão
Outer edges of focal spot become so hot that the size of the focal spot is enlarged, a phenomenon referred to as?
Responda
-
Line focus principle
-
Focal spot bloom
-
Effective focal spot
-
Heel effect
Questão 38
Questão
Net result of focal spot bloom is?
Responda
-
Increase in quality
-
Loss in sharpness
-
Loss in sharpness and definition
-
increase in sharpness
Questão 39
Questão
Most tube failures happen because of?
Responda
-
Cathode failure
-
Anode failure
-
Filament failure
-
Focusing cup failure
Questão 40
Questão
The x-ray does not have to cool between x-rays
Responda
- True
- False
Questão 41
Questão
Which is not true of the standby current?
Responda
-
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
Questão 42
Questão
You are going to take an x-ray of the abdomen with the use of the preexposure button. You are waiting until?
Responda
-
Expiration
-
Inspiration
Questão 43
Questão
You are going to take an x-ray of the thorax with the use of the preexposure button. You are waiting until?
Responda
-
Expiration
-
Inspiration
Questão 44
Questão
If the film is transparent or light after processing, there is most likely an issue with the?
Responda
-
Anode
-
Cathode
-
Filament
-
Preexposure button
Questão 45
Questão
Firm blackness that is not uniform could be due to?
Responda
-
Anode target failure
-
Anode bearings failure
-
Glass envelop damage
-
Filament failure
-
Cathode failure
Questão 46
Questão
Which is most likely to fail with the use of preexposure button over an extended period of time?
Responda
-
Anode bearings
-
Anode target
-
Cathode
-
Glass envelope
-
Filament
Questão 47
Questão
The mAs meter on the machine is stuck. You suspect?
Responda
-
Filament failure
-
Anode target failure
-
Cathode failure
-
Preexposure button failure
-
Anode bearings failure
Questão 48
Questão
You should use ___ mAs techniques when possible
Responda
-
high
-
low
Questão 49
Questão
What may cause arcing?
Responda
-
Glass envelop damage
-
Cathode failure
-
Anode failure
-
Effective focal spot bloom
Questão 50
Questão
Provides the electrical potential to drive the electron cloud in stream from cathode to anode
Responda
-
high voltage circuit
-
Low voltage circuit
Questão 51
Questão
Provides electricity to heat the filament
Responda
-
High voltage circuit
-
Low voltage circuit
Questão 52
Questão
Reduces voltage of incoming line to about 10 volts
Responda
-
Autotransformer
-
Step-up transformer
-
Step-down transformer
-
Biotransformer
Questão 53
Questão
In general, what part of the x-ray dissipates heat for the entire machine?
Responda
-
Oil
-
Glass envelope
-
Anode
-
Focusing cup
-
Filament
Questão 54
Questão
Controls amount of kVP across the x-ray tube
Responda
-
Autotransformer
-
Step-up transformer
-
Step-down transformer
-
Biotransformer
Questão 55
Questão
Which circuit is connected to the mA control on the console
Responda
-
Low voltage circuit
-
High voltage circuit
-
Autotransformer
-
Step-up transformer
Questão 56
Questão
You want to keep exposure times of 1/30 second or longer
Responda
- True
- False
Questão 57
Questão
Which is used for portable units
Responda
-
Half wave rectification
-
Full wave rectification
Questão 58
Questão
If you want to decrease potential of x-ray exposure to the technician, use a timer switch
Responda
- True
- False
Questão 59
Questão
Which only uses the positive part of the electrical current in regards to half way rectification?
Responda
-
Dental units
-
Stationary units
Questão 60
Questão
Why are rectifiers used?
Responda
-
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
Questão 61
Questão
What does a colimator do?
Responda
-
Controls size of x-ray
-
Controls heat of x-ray
-
Controls strength of x-ray
-
Helps prevent focal spot blooming
Questão 62
Questão
Scatter radiation is a negative result of an uncontrolled beam that can result in?
Responda
-
Cathode damage and failure
-
Anode bearing failure
-
Oil leakage and overheating
-
Fogs the film
Questão 63
Questão
Coning down prevents?
Responda
-
Damage to the cathode
-
Damage to personnel
-
Damage to the filament
-
Overheating
Questão 64
Questão
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?
Responda
-
2.5mm aluminum filter
-
Collimator (AKA: Coning down)
-
Focusing cup
-
Filament
Questão 65
Questão
What is the #1 cause of artifacts on a radiograph?
Responda
-
Motion
-
Filament failure
-
Cathode failure
-
Glass window cracking (crazing and arcing)
Questão 66
Questão
What does the control panel not include?
Responda
-
Warning light
-
kVp and mA selector
-
voltage compensator
-
Exposure button
-
Timer
-
Emergency turn off switch
Questão 67
Questão
Which is not a factor of X-ray tube rating?
Responda
-
Focal spot size
-
Target angle
-
Anode speed
-
Electrical current
-
Alloy composition
Questão 68
Questão
What do X-ray tube ratings determine?
Responda
-
kVP
-
mA
-
How long can be used without overloading the tube
-
All of the above
Questão 69
Questão
What adjusts the transformer if needed when electrical output from incoming line is inconsistent?
Responda
-
Rectification
-
Voltage compensator
-
Aluminum filter
-
Colimator
Questão 70
Questão
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
Responda
- True
- False
Questão 71
Questão
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
Responda
- True
- False
Questão 72
Questão
The negatively charged particle of an atom is?
Responda
-
Electron
-
Proton
Questão 73
Questão
A radiograph is synonymous with an x-ray
Responda
-
True
-
False
Questão 74
Questão
Frequency is measured how?
Responda
-
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
Questão 75
Questão
Atoms consist of?
Responda
-
Particles
-
Electrons
-
Neutrons
-
All of the above
Questão 76
Questão
X-ray machine rays can bend and turn corners as needed which is why safety glasses are required
Responda
- True
- False
Questão 77
Questão
The actual beam from a machine is called?
Responda
-
X-ray
-
Radiograph
Questão 78
Questão
X-rays can excite or ionize atoms which can be a source of tumors and tissue damage if precautions are not taken
Responda
- True
- False
Questão 79
Questão
The guy that discovered x-rays and documented them in 1895 is: [blank_start]Wilhelm Conrad Roentgen[blank_end]
Responda
-
Wilhelm Conrad Roentgen
Questão 80
Questão
Which of the following do we need to produce an x-ray
Responda
-
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
Questão 81
Questão
A mammography machine is likely to be made of?
Responda
-
Tungsten
-
Molybdenum
Questão 82
Questão
Why is the base of the anode copper?
Responda
-
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
Questão 83
Questão
Which of the following anodes will rotate on its axis through the center of the tube
Responda
-
Stationary anode
-
Portable anode
-
Dental anode
-
Disk shaped anode
-
Portable units and dental units both rotate on their axis
Questão 84
Responda
-
Cathode
-
Anode
Questão 85
Responda
-
Cathode
-
Anode
Questão 86
Responda
-
Oil
-
Glass envelope
-
Window
-
Filter
Questão 87
Responda
-
Filament
-
Focusing cup
-
Window
-
Filter
-
Both Filament and focusing cup
Questão 88
Responda
-
Target
-
Cathode filament and focusing cup
-
Glass envelope
-
Window
-
Filter
Questão 89
Questão
Radiation is emitted from the target area in a ___ shape with the heel effect
Responda
-
Conical
-
Square
Questão 90
Questão
Which is the most limited in mA and has limited use on large body parts?
Responda
-
Portable anodes
-
Disk shaped anodes
Questão 91
Questão
How do you get mAs?
Responda
-
mA x time
-
mA x kVp
-
mA x time divided by kVp
Questão 92
Questão
Waves from high frequency generators are usually?
Responda
-
Square
-
Circular
-
Conical
Questão 93
Questão
Watery with lots of air require?
Responda
-
Higher mA
-
Lower mA
Questão 94
Questão
Which is a normal mA setting?
Responda
-
100
-
44
Questão 95
Questão
Which is a normal Kvp setting?
Responda
-
46
-
200
Questão 96
Questão
The primary purpose of the x-ray tube is to stop stray radiation AND prevent damage to internal components
Responda
- True
- False
Questão 97
Questão
Do shorter or longer wave lengths have better penetration?
Responda
-
Shorter
-
Longer
Questão 98
Questão
Bundles of energy that are carried by the wave in an x-ray beam are called?
Responda
-
Photons
-
Quanta
-
Neutrons
-
Both Quanta and Photons
Questão 99
Questão
Specific target angle that produces effective focal spot that will be square and much smaller than the actual focal spot
Responda
-
Heel effect
-
Line focus principle
-
Focal spot zoom
-
Focal spot bloom
Questão 100
Questão
Which produces more heat?
Responda
-
500 mA
-
300 mA
Questão 101
Questão
The kilovoltage applied between the anode and cathode will later translate into penetrating power
Responda
- True
- False
Questão 102
Questão
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
Responda
- True
- False
Questão 103
Questão
Aluminum filters help to?
Responda
-
Remove low energy photons
-
Remove high energy photons
-
Remove high energy electrons
-
Remove low energy electrons
Questão 104
Questão
If the warning light turns on during the x-ray exposure, this indicates an issue with the machine and requires immediate technical support
Responda
- True
- False
Questão 105
Questão
Which has more filaments
Responda
-
Portable machines
-
Floor models
Questão 106
Questão
The heel effect is the result of?
Responda
-
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
Questão 107
Questão
What kind of anode would you choose to decrease the heel effect?
Responda
-
25 degrees angled anode
-
15 degrees angled anode
-
18 degrees angled anode
Questão 108
Questão
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
Responda
- True
- False
Questão 109
Questão
IS the rotating anode, the filament is angled to direct electrons toward the beveled target area of the rotating disk to distribute heat
Responda
- True
- False
Questão 110
Questão
In stationary anodes, the face of the target is angled toward the window and cannot withstand high heats
Responda
-
true
-
false
Questão 111
Questão
Which will better absorb photons
Responda
-
More dense
-
Less dense
Questão 112
Questão
Rotating anodes can have smaller focal spots than stationary anodes
Responda
- True
- False
Questão 113
Questão
Anode bearing failure is most often seen in?
Responda
-
Rotating anodes
-
Stationary anodes
Questão 114
Questão
The majority of tube failure is user error
Responda
- True
- False
Questão 115
Questão
Rectifiers are placed in series in high voltage part of circuit to prevent conduction during negative phase
Responda
-
true
-
false
Questão 116
Questão
High-frequency generators often have hills and valleys
Responda
- True
- False
Questão 117
Questão
Full wave rectification current pulses 120 times/second and is twice the x-ray production and decreased exposure times
Responda
- True
- False
Questão 118
Questão
Which does not use tungsten?
Responda
-
Wire filament
-
Focusing cup
-
Anode
-
Target
Questão 119
Questão
The spindle which dissipates heat for the rotating anode is made up?
Responda
-
Tungsten
-
Molybdenum
Questão 120
Questão
Which is a poor conductor of heat?
Responda
-
Molybdenum
-
Tungsten
Questão 121
Questão
Which is better at dissipating heat?
Responda
-
Tungsten
-
Molybdenum
Questão 122
Questão
If the anode bearings are just starting to go bad, you will hear a machinery like noise and target will overheat
Responda
- True
- False
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