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39 Cards in this Set
- Front
- Back
An X-ray tube consists of which two electrodes?
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Anode
Cathode |
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Acceleration of electrons is controlled by what?
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Kilovoltage (KVP)
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At no time should personnel have any part of their own body in the primary beam, even while wearing protective equipment.
True or False |
True
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List 4 pieces of protective equipment that must be worn at all times when taking radiographs.
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Lead apron
thyroid collar lead gloves doseimerty badge |
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Who is credited with discovering x-rays?
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Wilhelm Conrad Roentgen
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X-rays are defined as having a
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short wavelength with high frequency
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What part of the x-ray machine is a restricting device used to control the size of the primary x-ray beam?
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collimator
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Secondary radiation or __________ radiation is produced when the primary beam interacts with objects in its path.
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Scatter
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In x-ray tubes, the majority of energy produced by the movement of electrons is in the form of:
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heat
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X-ray electromagnetic radiation travels in a straight line, the direction of which can be altered.
true or false |
True
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A small amount of air within the glass envelope is beneficial because it helps to dissipate heat.
True or False |
False
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Veterinary patients have a tendency to move while being positioned for radiographs to be taken. The radiographer should help to safely prevent artifacts of movement by:
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using the shortest exposure time possible.
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What is a type of somatic damage caused by radiation?
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sterility
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a radiograph is synonymous whit an x-ray.
True or False |
False
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A way to increase penetreating power of x-rays
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increasing kVp
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What is Santes's rule?
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Width x 2 plus 40 =
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All personnel present in the radiography room when an exposure is made should wear appropriate protective lead apparel.
True or False |
True
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A negatively charged particle that travels atound the nucleus is a (an)
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electron
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A higher kVp setting allows for a ______ mAs and ________ exposure time.
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lower, lower
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The temperature of the filament within the cathode is controlled by:
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time setting
mA setting |
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What is radiographic density?
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The darkness of the radiograph
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What is radiographic contrast?
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the difference in the black and white of the radiograph
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"Motion" causes what artifact?
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Blurriness
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What is an "artifact"?
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Anything that does not belong on the radiograph, mistakes, fingers , cracks
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The kVp setting on an x-ray machine controls the?
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Quality of the x-ray beam
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The mA setting on an x-ray machine controls the?
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Quantity of the beam
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To produce x-rays, a great deal of energy in an x-ray tube is converted into heat. The ratio of heat generated to x-ray production is generally considered to be:
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99%:1%
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A bullet fragment on a film will appear as a
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white mark
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What can be used in place of a lead sheet to block part of the film?
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lead-lined gloves
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The anatomic area of interest should be as close to the film as possible in order to do the following
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Reduce distortion
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Dorsal
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D
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Oblique
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O
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Medial
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M
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Ventral
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V
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Caudal
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Cd
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Cranial
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Cr
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Rostral
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R
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Palmer
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Pa
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Planter
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Pl
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