Quiz
Radiography Test
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Perguntas do quiz (122)
1The distance between two consecutive corresponding points on a wave is?
- AFrequency
- BCycles
- CWave
- DWavelength
2X-rays are?
- AVisible with ultraviolet light
- BVisible while in the dark room
- COnly visible when it is being shot
- DThey are like JOHN CENA and you cant see them
3The higher that the frequency of x-ray waves are...
- AThe higher the penetration
- BThe lower the penetration
4Wave length is?
- AVariable
- BDoes not change since it goes in only a straight line
5X-ray penetration depends on atomic number, x-ray energy, and density
- AVerdadeiro
- BFalso
6Waves that are longer have___?
- ALower frequency
- BHigher frequency
7The lower the frequency the _____ the penetration power
- ALower
- BHigher
8The cathode is?
- ANegative
- BPositive
9The anode is?
- APositive
- BNegative
10Which consists of the wire filament and focusing cup?
- AAnode
- BCathode
11X-rays are?
- A90% heat and 9% X-rays
- B99% heat and 1% X-rays
- C1% heat and 99% X-rays
- D50% heat and 50% X-rays
12What provides and houses the vacuum environment?
- AAnode
- BCathode
- CGlass envelope
- DFocusing cup
- EWire filament
- FAluminum filter
13Produces electrons when heated
- AAnode
- BCathode
- CWire filament
- DFocusing cup
14What is the wire filament made of and why?
- ATungsten; high atomic number and high melting point
- BMolybdenum; low atomic number and high melting point
- CCopper; high atomic number and low melting point necessary for electron production
- DAluminum; high atomic number, high melting point
15mA is?
- AHow many electrons
- BSpeed of the electrons
16kVp is?
- ASpeed of electrons
- BHow many electrons
17The higher that an atomic number is....
- AThe more dense it is
- BThe less dense it is
18If x-ray beams went all the way to the film..
- AYou would see black
- BYou would see white
19If you see white on the finished radiograph, this tells you?
- AThe x-ray beams were absorbed
- BThe x-rays beams penetrated and reached the film
20What is the wire filament heated by?
- ALow energy circuit
- BHigh energy circuit
21X-rays beams can cause cataracts in humans
- AVerdadeiro
- BFalso
22Objects that fluoresce or emit light after an x-ray has been shot indicates that the x -ray machine wire filament is faulty
- AVerdadeiro
- BFalso
23The focusing cup is made of what material and why?
- AMolybdenum; high melting point and poor conductor of heat
- BTungsten; high melting point and great conductor of heat
24The target of the anode is made of what material and why?
- ATungsten; dissipates heat
- BMolybdenum; high melting point
25What would tell you that heat damage have occurred in a dental anode?
- ACathode will not make a cloud of electrons
- BFinished radiograph is too light
- CThere will be no radiograph made
- DYou will hear a loud machinery noise inside of the anode side
26The heel effect is more prominent in?
- ARotating anodes
- BStationary anodes
27What is the heel effect?
- Acauses increased absorption of x-ray photons by target before can reach patient due to decreased intensity at anode side
- Bcauses increased absorption of x-ray electrons by the cathode
- CResults in crazing which is when glass pieces fall and can "arch" the current
- DResults in decreased absorption of quanta at the target before can reach patient and image receptor due to increased intensity on cathode side
28The most common focal spot in a veterinary machine is?
- A2mm squared
- B3mm squared
- C7-8mm squared
- D10mm squared
29In regards to x-ray, pneumbra is?
- A1996 band formed in France and wrote the song "Tragical Memories"
- BLighter than normal x-ray phenomon
- CLarger focal spots that form halo effect on finished radiograph
- DDarker than normal x-ray phenomon
30During the heel effect, there is?
- ADecreased intensity at anode side
- BDecrease intensity at cathode side
- CIncreased intensity at cathode side
- DIncreased intensity at anode side
31In most situations, larger focal spots produce images with?
- AGreater detail
- BReduction of detail
32The ____ the anode, the more severe that the heel effect becomes
- Afaster
- Bslower
- Clarger
- Dsteeper
33Which would have the larger focal spot to dissipate heat?
- ARotating anode
- BStationary anodes
34Is a tightly focused x-ray beam that exits the tube window
- AEffective focal spot
- BFocal spot
- CLine focus principle
- DAnode beam
- EFocusing cup
35Which is larger?
- AActual focal spot
- BEffective focal spot
36In an x-ray, the dog's head is usually towards the?
- ACathode
- BAnode
37Outer edges of focal spot become so hot that the size of the focal spot is enlarged, a phenomenon referred to as?
- ALine focus principle
- BFocal spot bloom
- CEffective focal spot
- DHeel effect
38Net result of focal spot bloom is?
- AIncrease in quality
- BLoss in sharpness
- CLoss in sharpness and definition
- Dincrease in sharpness
39Most tube failures happen because of?
- ACathode failure
- BAnode failure
- CFilament failure
- DFocusing cup failure
40The x-ray does not have to cool between x-rays
- AVerdadeiro
- BFalso
41Which is not true of the standby current?
- AProlongs life of the tube
- BProduces an electron cloud prior to an actual x-ray (good for inhalation and exhalation)
- CPreheats filament to a low temperature when X-ray machine is turned on
42You are going to take an x-ray of the abdomen with the use of the preexposure button. You are waiting until?
- AExpiration
- BInspiration
43You are going to take an x-ray of the thorax with the use of the preexposure button. You are waiting until?
- AExpiration
- BInspiration
44If the film is transparent or light after processing, there is most likely an issue with the?
- AAnode
- BCathode
- CFilament
- DPreexposure button
45Firm blackness that is not uniform could be due to?
- AAnode target failure
- BAnode bearings failure
- CGlass envelop damage
- DFilament failure
- ECathode failure
46Which is most likely to fail with the use of preexposure button over an extended period of time?
- AAnode bearings
- BAnode target
- CCathode
- DGlass envelope
- EFilament
47The mAs meter on the machine is stuck. You suspect?
- AFilament failure
- BAnode target failure
- CCathode failure
- DPreexposure button failure
- EAnode bearings failure
48You should use ___ mAs techniques when possible
- Ahigh
- Blow
49What may cause arcing?
- AGlass envelop damage
- BCathode failure
- CAnode failure
- DEffective focal spot bloom
50Provides the electrical potential to drive the electron cloud in stream from cathode to anode
- Ahigh voltage circuit
- BLow voltage circuit
51Provides electricity to heat the filament
- AHigh voltage circuit
- BLow voltage circuit
52Reduces voltage of incoming line to about 10 volts
- AAutotransformer
- BStep-up transformer
- CStep-down transformer
- DBiotransformer
53In general, what part of the x-ray dissipates heat for the entire machine?
- AOil
- BGlass envelope
- CAnode
- DFocusing cup
- EFilament
54Controls amount of kVP across the x-ray tube
- AAutotransformer
- BStep-up transformer
- CStep-down transformer
- DBiotransformer
55Which circuit is connected to the mA control on the console
- ALow voltage circuit
- BHigh voltage circuit
- CAutotransformer
- DStep-up transformer
56You want to keep exposure times of 1/30 second or longer
- AVerdadeiro
- BFalso
57Which is used for portable units
- AHalf wave rectification
- BFull wave rectification
58If you want to decrease potential of x-ray exposure to the technician, use a timer switch
- AVerdadeiro
- BFalso
59Which only uses the positive part of the electrical current in regards to half way rectification?
- ADental units
- BStationary units
60Why are rectifiers used?
- AWhen anode gets too hot, electrons can flow back to filament and damage it
- BWhen cathode gets too hot, electrons can cause damage to the glass envelope
- C"crazing" and "arcing" can both occur
- DX-rays that are constantly used can result in anode bearing damage which results in lighter x-rays
61What does a colimator do?
- AControls size of x-ray
- BControls heat of x-ray
- CControls strength of x-ray
- DHelps prevent focal spot blooming
62Scatter radiation is a negative result of an uncontrolled beam that can result in?
- ACathode damage and failure
- BAnode bearing failure
- COil leakage and overheating
- DFogs the film
63Coning down prevents?
- ADamage to the cathode
- BDamage to personnel
- CDamage to the filament
- DOverheating
64You 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?
- A2.5mm aluminum filter
- BCollimator (AKA: Coning down)
- CFocusing cup
- DFilament
65What is the #1 cause of artifacts on a radiograph?
- AMotion
- BFilament failure
- CCathode failure
- DGlass window cracking (crazing and arcing)
66What does the control panel not include?
- AWarning light
- BkVp and mA selector
- Cvoltage compensator
- DExposure button
- ETimer
- FEmergency turn off switch
67Which is not a factor of X-ray tube rating?
- AFocal spot size
- BTarget angle
- CAnode speed
- DElectrical current
- EAlloy composition
68What do X-ray tube ratings determine?
- AkVP
- BmA
- CHow long can be used without overloading the tube
- DAll of the above
69What adjusts the transformer if needed when electrical output from incoming line is inconsistent?
- ARectification
- BVoltage compensator
- CAluminum filter
- DColimator
70A 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
- AVerdadeiro
- BFalso
71The 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
- AVerdadeiro
- BFalso
72The negatively charged particle of an atom is?
- AElectron
- BProton
73A radiograph is synonymous with an x-ray
- ATrue
- BFalse
74Frequency is measured how?
- ACycles of the wave that pass stationary point per second
- BCycles of the wave that pass stationary point per minute
- CCycles of the wave that pass stationary point per hour
75Atoms consist of?
- AParticles
- BElectrons
- CNeutrons
- DAll of the above
76X-ray machine rays can bend and turn corners as needed which is why safety glasses are required
- AVerdadeiro
- BFalso
77The actual beam from a machine is called?
- AX-ray
- BRadiograph
78X-rays can excite or ionize atoms which can be a source of tumors and tissue damage if precautions are not taken
- AVerdadeiro
- BFalso
79The guy that discovered x-rays and documented them in 1895 is: [blank_start]Wilhelm Conrad Roentgen[blank_end]
- AWilhelm Conrad Roentgen
80Which of the following do we need to produce an x-ray
- ASource of electrons
- BWay to accelerate electrons from one side of the tube to the other
- CVacuum environment to remove air molecules and prevent oxidation
- DTarget for electrons to collide with and interact with to produce x-rays
- EAll of the above
81A mammography machine is likely to be made of?
- ATungsten
- BMolybdenum
82Why is the base of the anode copper?
- ADraws heat away from target
- BUsed to help make electrons and shoot them forward
- CPrevent scatter radiation as a result of stray electrons on their way from the cathode side
- DAll of the above are true
83Which of the following anodes will rotate on its axis through the center of the tube
- AStationary anode
- BPortable anode
- CDental anode
- DDisk shaped anode
- EPortable units and dental units both rotate on their axis
84What is the red arrow pointing to?
- ACathode
- BAnode
85What is the red arrow pointing to?
- ACathode
- BAnode
86What is the red arrow?
- AOil
- BGlass envelope
- CWindow
- DFilter
87What is the red arrow pointing to?
- AFilament
- BFocusing cup
- CWindow
- DFilter
- EBoth Filament and focusing cup
88The red arrow is pointing towards?
- ATarget
- BCathode filament and focusing cup
- CGlass envelope
- DWindow
- EFilter
89Radiation is emitted from the target area in a ___ shape with the heel effect
- AConical
- BSquare
90Which is the most limited in mA and has limited use on large body parts?
- APortable anodes
- BDisk shaped anodes
91How do you get mAs?
- AmA x time
- BmA x kVp
- CmA x time divided by kVp
92Waves from high frequency generators are usually?
- ASquare
- BCircular
- CConical
93Watery with lots of air require?
- AHigher mA
- BLower mA
94Which is a normal mA setting?
- A100
- B44
95Which is a normal Kvp setting?
- A46
- B200
96The primary purpose of the x-ray tube is to stop stray radiation AND prevent damage to internal components
- AVerdadeiro
- BFalso
97Do shorter or longer wave lengths have better penetration?
- AShorter
- BLonger
98Bundles of energy that are carried by the wave in an x-ray beam are called?
- APhotons
- BQuanta
- CNeutrons
- DBoth Quanta and Photons
99Specific target angle that produces effective focal spot that will be square and much smaller than the actual focal spot
- AHeel effect
- BLine focus principle
- CFocal spot zoom
- DFocal spot bloom
100Which produces more heat?
- A500 mA
- B300 mA
101The kilovoltage applied between the anode and cathode will later translate into penetrating power
- AVerdadeiro
- BFalso
102If 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
- AVerdadeiro
- BFalso
103Aluminum filters help to?
- ARemove low energy photons
- BRemove high energy photons
- CRemove high energy electrons
- DRemove low energy electrons
104If the warning light turns on during the x-ray exposure, this indicates an issue with the machine and requires immediate technical support
- AVerdadeiro
- BFalso
105Which has more filaments
- APortable machines
- BFloor models
106The heel effect is the result of?
- AX-ray emission that is nearly parallel to the target itself
- BX-ray emission that is nowhere near the target but is actually arced away
- CX-ray emission that is nearly perpendicular to the target itself
107What kind of anode would you choose to decrease the heel effect?
- A25 degrees angled anode
- B15 degrees angled anode
- C18 degrees angled anode
108To 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
- AVerdadeiro
- BFalso
109IS the rotating anode, the filament is angled to direct electrons toward the beveled target area of the rotating disk to distribute heat
- AVerdadeiro
- BFalso
110In stationary anodes, the face of the target is angled toward the window and cannot withstand high heats
- Atrue
- Bfalse
111Which will better absorb photons
- AMore dense
- BLess dense
112Rotating anodes can have smaller focal spots than stationary anodes
- AVerdadeiro
- BFalso
113Anode bearing failure is most often seen in?
- ARotating anodes
- BStationary anodes
114The majority of tube failure is user error
- AVerdadeiro
- BFalso
115Rectifiers are placed in series in high voltage part of circuit to prevent conduction during negative phase
- Atrue
- Bfalse
116High-frequency generators often have hills and valleys
- AVerdadeiro
- BFalso
117Full wave rectification current pulses 120 times/second and is twice the x-ray production and decreased exposure times
- AVerdadeiro
- BFalso
118Which does not use tungsten?
- AWire filament
- BFocusing cup
- CAnode
- DTarget
119The spindle which dissipates heat for the rotating anode is made up?
- ATungsten
- BMolybdenum
120Which is a poor conductor of heat?
- AMolybdenum
- BTungsten
121Which is better at dissipating heat?
- ATungsten
- BMolybdenum
122If the anode bearings are just starting to go bad, you will hear a machinery like noise and target will overheat
- AVerdadeiro
- BFalso
Informações
- Descrição
- test
- Autor
- Zachariah Atteberry
- Idioma
- English
- Visualizações
- 220
- Histórico
- Criado em 9 jul 2016 · atualizado em 6 abr 2018
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