Radiography Test

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The distance between two consecutive corresponding points on a wave is?

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X-rays are?

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The higher that the frequency of x-ray waves are...

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Wave length is?

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X-ray penetration depends on atomic number, x-ray energy, and density

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Waves that are longer have___?

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The lower the frequency the _____ the penetration power

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The cathode is?

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The anode is?

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Which consists of the wire filament and focusing cup?

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X-rays are?

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What provides and houses the vacuum environment?

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Produces electrons when heated

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What is the wire filament made of and why?

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mA is?

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kVp is?

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The higher that an atomic number is....

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If x-ray beams went all the way to the film..

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If you see white on the finished radiograph, this tells you?

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What is the wire filament heated by?

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X-rays beams can cause cataracts in humans

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

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The focusing cup is made of what material and why?

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The target of the anode is made of what material and why?

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What would tell you that heat damage have occurred in a dental anode?

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The heel effect is more prominent in?

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What is the heel effect?

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The most common focal spot in a veterinary machine is?

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In regards to x-ray, pneumbra is?

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During the heel effect, there is?

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In most situations, larger focal spots produce images with?

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The ____ the anode, the more severe that the heel effect becomes

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Which would have the larger focal spot to dissipate heat?

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Is a tightly focused x-ray beam that exits the tube window

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Which is larger?

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In an x-ray, the dog's head is usually towards the?

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Outer edges of focal spot become so hot that the size of the focal spot is enlarged, a phenomenon referred to as?

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Net result of focal spot bloom is?

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Most tube failures happen because of?

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The x-ray does not have to cool between x-rays

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Which is not true of the standby current?

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

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

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If the film is transparent or light after processing, there is most likely an issue with the?

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Firm blackness that is not uniform could be due to?

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Which is most likely to fail with the use of preexposure button over an extended period of time?

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The mAs meter on the machine is stuck. You suspect?

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You should use ___ mAs techniques when possible

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What may cause arcing?

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Provides the electrical potential to drive the electron cloud in stream from cathode to anode

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Provides electricity to heat the filament

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Reduces voltage of incoming line to about 10 volts

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In general, what part of the x-ray dissipates heat for the entire machine?

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Controls amount of kVP across the x-ray tube

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Which circuit is connected to the mA control on the console

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You want to keep exposure times of 1/30 second or longer

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Which is used for portable units

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If you want to decrease potential of x-ray exposure to the technician, use a timer switch

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Which only uses the positive part of the electrical current in regards to half way rectification?

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Why are rectifiers used?

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What does a colimator do?

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Scatter radiation is a negative result of an uncontrolled beam that can result in?

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Coning down prevents?

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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?

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What is the #1 cause of artifacts on a radiograph?

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What does the control panel not include?

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Which is not a factor of X-ray tube rating?

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What do X-ray tube ratings determine?

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What adjusts the transformer if needed when electrical output from incoming line is inconsistent?

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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

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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

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The negatively charged particle of an atom is?

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A radiograph is synonymous with an x-ray

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Frequency is measured how?

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Atoms consist of?

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X-ray machine rays can bend and turn corners as needed which is why safety glasses are required

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The actual beam from a machine is called?

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

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The guy that discovered x-rays and documented them in 1895 is:

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Which of the following do we need to produce an x-ray

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A mammography machine is likely to be made of?

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Why is the base of the anode copper?

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Which of the following anodes will rotate on its axis through the center of the tube

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What is the red arrow pointing to?

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What is the red arrow pointing to?

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What is the red arrow?

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What is the red arrow pointing to?

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The red arrow is pointing towards?

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Radiation is emitted from the target area in a ___ shape with the heel effect

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Which is the most limited in mA and has limited use on large body parts?

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How do you get mAs?

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Waves from high frequency generators are usually?

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Watery with lots of air require?

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Which is a normal mA setting?

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Which is a normal Kvp setting?

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The primary purpose of the x-ray tube is to stop stray radiation AND prevent damage to internal components

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Do shorter or longer wave lengths have better penetration?

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Bundles of energy that are carried by the wave in an x-ray beam are called?

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Specific target angle that produces effective focal spot that will be square and much smaller than the actual focal spot

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Which produces more heat?

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The kilovoltage applied between the anode and cathode will later translate into penetrating power

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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

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Aluminum filters help to?

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

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Which has more filaments

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The heel effect is the result of?

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What kind of anode would you choose to decrease the heel effect?

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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

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IS the rotating anode, the filament is angled to direct electrons toward the beveled target area of the rotating disk to distribute heat

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In stationary anodes, the face of the target is angled toward the window and cannot withstand high heats

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Which will better absorb photons

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Rotating anodes can have smaller focal spots than stationary anodes

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Anode bearing failure is most often seen in?

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The majority of tube failure is user error

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Rectifiers are placed in series in high voltage part of circuit to prevent conduction during negative phase

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High-frequency generators often have hills and valleys

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Full wave rectification current pulses 120 times/second and is twice the x-ray production and decreased exposure times

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Which does not use tungsten?

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The spindle which dissipates heat for the rotating anode is made up?

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Which is a poor conductor of heat?

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Which is better at dissipating heat?

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

test

Radiography Test

Radiography Test

The distance between two consecutive corresponding points on a wave is?

X-rays are?

The higher that the frequency of x-ray waves are...

Wave length is?

X-ray penetration depends on atomic number, x-ray energy, and density

Waves that are longer have___?

The lower the frequency the _____ the penetration power

The cathode is?

The anode is?

Which consists of the wire filament and focusing cup?

X-rays are?

What provides and houses the vacuum environment?

Produces electrons when heated

What is the wire filament made of and why?

mA is?

kVp is?

The higher that an atomic number is....

If x-ray beams went all the way to the film..

If you see white on the finished radiograph, this tells you?