ARRT registry review covering Equipment Operation & Quality Control content area
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| Bremsstrahlung radiation make up what percent of the x-ray beam? | 70%-90%
pg. 437
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| What percent of the x-ray beam does characteristic radiation make up? | 10%-30%
pg. 437
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| Compton scatter ejects an _________ ________ electron. | outer shell
pg. 440
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| The number of cycles per unit of time is the definition of __________. | frequency
pg. 443
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| The unit of measurement for frequency is _________. | Hertz (Hz)
pg. 444
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| Which scientist observed that a magnetic field with induce an electric current? | Faraday
pg. 445
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| A singe-phase, full-wave rectified waveform has a ___ % voltage ripple. | 100
pg. 448
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| A three-phase/six-pulse rectification has a ___ % voltage ripple. | 13
pg. 449
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| A three-phase/twelve pulse rectification has a ___ % voltage ripple. | 4
pg. 449
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| The focal track of the anode is made up of what kind of material? | Tungsten and rhenium alloy
pg. 451
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| For a single phase unit, heat units can be determined by the equation? | mA X s X kV = HU
pg. 454
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| Causes of x-ray tube failure are _________, ________, ________, and _________. | vaporized tungsten, pitted anode, cracked anode, and gassy tube.
pg. 455-457
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| This part of the x-ray circuit functions to automatically adjust for any fluctuations in incoming voltage supply and is located on the primary side. | Line voltage compensator
pg. 458
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| This part of the x-ray circuit is a system of diodes that is located between the secondary coil of the high-voltage transformer and the x-ray tube. | Rectifiers
pg. 461
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| The range of grays a particular digital system is capable of resolving/demonstrating. | Contrast Resolution
pg. 466
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| The ratio of light photons at the output phosphor to the number at the input phosphor. | Flux gain
pg. 482
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| The ratio of the diameters of the input and output screens squared refers to _________. | Minification gain
pg. 482
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| Diminished resolution and contrast at the periphery. | Vignetting
pg. 483
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| The thickness of any absorber and the recording that will reduce x-ray beam intensity to one-half its original value. | Half-Value Layer
pg. 497
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| Test performed annually that evaluates the consistency of x-ray tube output and should not vary more than 5%. | Reproducibility
pg. 497
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