Key Words
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Anatomically programmed radiography | show 🗑
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| show | an electronic circuit within the x-ray machine that automatically terminates the exposure when predetermined quantity of x-rays has been detected
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| Autotransformer | show 🗑
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| show | a timer that backs up the AEC, to ensure that the patient does not get overexposed
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| show | an electronic device that permits current to flow in one direction only; prevents back flow. When one used is placed between the anode and the transformer and when two is used the second is placed between the cathode and anode
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| Electric ground | show 🗑
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| Electronic timer | show 🗑
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| Exposure switch | show 🗑
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| Exposure time | show 🗑
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| Full wave rectification | show 🗑
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| Heat unit (HU) | show 🗑
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| High frequency x-ray generator | show 🗑
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| Ionization chamber | show 🗑
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| show | a fluorescent screen under the Bucky tray that gives off light when exposed to radiation that has passed through the patient and IR that terminates the exposure after a specific amount of light has been detected
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| Rectifier | show 🗑
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| show | varies the resistance in a circuit
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| Rotor/prep/ready/standby switch | show 🗑
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| Self – rectification | show 🗑
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| Single phase current | show 🗑
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| show | controlled by a small electric motor rotating at 60 revolutions/sec time settings will be stated as fractions and multiples of 1/60 second the duration of an electric impulse
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| Three phase current | show 🗑
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| show | a graph that is made by the company that is used to determine if the mA and time chosen will be a safe exposure
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| show | a voltmeter wired to measure the incoming voltage
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| Rectification – | show 🗑
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| Contrast | show 🗑
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| Density (radiographic) | show 🗑
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| show | difference between the actual subject and its radiographic image
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| Elongation | show 🗑
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| Foreshortening | show 🗑
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| Involuntary motion | show 🗑
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| Magnification | show 🗑
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| show | the relationship between the distance of the subject and the IR
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| Over exposed | show 🗑
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| show | a solid piece of aluminum with steps of varying thickness
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| show | unwanted exposure to the film
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| show | the unsharp edges of an image; the blur; geometric unsharpness
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| Quantum mottle | show 🗑
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| show | the overall contrast seen in the radiographic image
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| show | the sharpness of the structures in the image the terms detail, sharpness and resolution are sometimes used to refer to recorded detail
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| show | result in unequal magnification of the actual shape of the structure
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| Short scale contrast | show 🗑
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| show | form of magnification
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| show | the distance between the x-ray tube and the IR
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| show | the range of differences in the intensity of the x-ray beam after it exits the patient
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| Tissue density | show 🗑
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| show | the actual anatomic area, body part or structure
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| Underexposed | show 🗑
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| show | motion that is normally controllable
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| Long scale contrast | show 🗑
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| show | the relationship between SID & beam intensity; A law that states the x-ray intensity is inversely proportional to the square of the distance from the source I1/I2 = SID22/ SID12
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| show | the part of the x-ray equipment where the factors are set to take a radiograph and is behind a lead barrier
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| show | the subcircuit of the circuit that supplies and controls the heat required by the x-ray tube filament for thermionic emissionbefore processing; used to measure contrast
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| Low voltage circuit | show 🗑
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| show | subcircuit of the x-ray circuit that begins and ends with the secondary side of the step up transformer, it increases the voltage to make x-rays
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| Line voltage compensator | show 🗑
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| show | device that measures the voltage output from the autotransformer
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| Milliammeter | show 🗑
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| Alternating current | show 🗑
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| Direct current | show 🗑
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| show | x-ray units that begin at the highest mA compatible with the desired filament and focal spot selection. mA decreases during exposure if necessary to avoid over heating
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| show | uniform tight contact with two intensifying screens with the film between them
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Created by:
mdtodd
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