ARRT registry review covering equipment operation & quality control content area
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| What kind of radiation comprises 70-90% of the x-ray beam? | Bremsstrahlung; Pg. 431
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| What is the principal factor affecting beam quantity? | mAs; Pg. 434
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| What is the principal factor affecting beam quality? | kV; Pg. 434
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| What is a relatively low-energy x-ray photon that uses all its energy to eject an inner shell electron, leaving an orbital vacancy? | Photoelectric effect; Pg. 434
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| What is a fairly high-energy x-ray photon that ejects an outer shell electron? | Compton Scatter; Pg. 434
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| What kind of interaction occurs between x-rays and matter with very low-energy x-ray photons - energies rarely used in diagnostic radiology? | Coherent (Classical) scatter; Pg. 435
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| What functions to change mechanical energy to electrical energy? | Generators; Pg. 437
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| What is characterized by varying amplitude and periodic reversal of polarity? | AC; Pg. 437
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| Who made the observation that a magnetic field will induce an electric current in a conductor if there is motion of either the magnetic field or the conductor? | Faraday; Pg. 439
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| In Bremsstrahlung radiation, energy loss is given up in what form? | X-ray photon; Pg. 444
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| What is chosen for the target material because of its high atomic number, high melting point, and thermal conductivity? | Tungsten; Pg. 446
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| What percent of the kinetic energy of the electron stream is converted to x-rays? | 0.2%; Pg. 447
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| mA x s x kV (single phase) is the formula to solve for what? | Heat units; Pg. 448
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| What cause of x-ray tube failure is caused by thermionic emission? | Vaporized tungsten; Pg. 449
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| If an IP and its PSP storage plate has been stored and unused for _____ hours or more, the plate should be erased prior to use. | 48; Pg. 462
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| Contrast modification, image subtraction, and windowing and all components of what? | Image manipulation postprocessing; Pg. 463
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| T/F: Fewer frames per second result in lower patient dose. | True; Pg. 478
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| How many minutes are on the timer that measures accumulated fluoroscopic examination time when the audible sound or interruption of exposure occurs? | 5 minutes; Pg. 478
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| Selected kilovolt and actual kilovolt value should not differ by more than +/- what amount of kV for general diagnostic equipment? | +/- 4 kV; Pg. 494
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| What device can be used to evaluate each mA station? | Aluminum step-wedge (penetrometer); Pg. 495
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| The selected exposure time should be within what percent of the actual exposure time? | 5%; Pg. 495
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| Digital radiation meter should register radiation output that does not vary more than what percent? | 5%; Pg. 496
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| What is defined as the thickness of any absorber that will reduce x-ray beam intensity to one-half its original value? | Half-value Layer; Pg. 496
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| What test uses the special wire-mesh test device to provide adequate screen care? | Screen-to-film contact testing; Pg. 497
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Created by:
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