ARRT Registry Review: Equipment Operation and Quality Control
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| All of the following are associated with the anode except | D.)thermionic emission
(Selman, 9th ed., pp. 138-139)
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| The type of x-ray tube designed to turn on and off rapidly, providing multiple short, precise exposures is | B.)grid-controlled
(Shepard, p. 367)
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| The minimum response time of an automatic exposure control (AEC) | B.)is its shortest possible exposure time
(Carlton and Adler, 4th ed., pp. 102-103)
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| The electron cloud within the x-ray tube is the product of a process called | B.)thermionic emission
(Bushong, 8th ed., p. 118)
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| Which of the following causes pitting, or many small surface melts, of the anode's focal track? | D.)repeated, frequent overloading
(Selman, 9th ed., pp. 137-138)
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| A parallel-plate ionization chamber receives a particular charge as x-ray photons travel through it. This is the operating principle of which of the following devices? | A.)AEC
(Carlton and Adler, 4th ed., p. 102)
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| Congruence of the x-ray beam with the light field is tested using | C.)radiopaque objects
(Carlton and Adler, 4th ed., p. 484)
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| What is the relationship between kV and HVL? | A.)as kV increases, the HVL increases
(Selman, 9th ed., pp. 122-123)
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| As window level increases | C.)brightness increases
(Fosbinder and Orth, p. 208)
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| Which of the following devices converts electrical energy to mechanical energy? | A.)motor
(Selman, 9th ed., p. 78)
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| A three-phase timer can be tested for accuracy using a synchronous spinning top. The resulting image looks like a | B.)solid arc, with the angle (in degrees) representative of the exposure time
(Selman, 9th ed., p. 106)
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| Star and wye configurations are related to | B.)rectification systems
(Selman, 9th ed., p. 163)
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| What is the device that directs the light emitted from the image intensifier to various viewing and imaging apparatus? | B.)beam splitter
(Selman, 9th ed., p. 262)
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| Which of the following systems function(s) to compensate for changing patient/part thicknesses during fluoroscopic procedures? | A.)automatic brightness control
(Bushong, 8th ed., p. 360)
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| The x-ray tube in a CT imaging system is most likely to be associated with | C.)a pulsed x-ray beam
(Bushong, 8th ed., pp. 429-430)
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| To maintain image clarity is an image-intensifier system, the path of electron flow from the photocathode to the output phosphor is controlled by | B.)electrostatic lenses
(Carlton and Adler, 4th ed., pp. 569-570)
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| Which part of an induction motor is located within the x-ray tube glass envelope? | D.)rotor
(Carlton and Adler, 4th ed., p. 73)
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| Which of the following devices is used to control voltage by varying resistance? | C.)rheostat
(Selman, 9th ed., p. 147)
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| Light-sensitive AEC devices are known as | A.)phototimers
(Shepard, pp. 275-276)
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| Which of the following formulas would the radiographer use to determine the total number of heat units produced with a given exposure using three-phase, six-pulse equipment? | C.)mA x time x kV x 1.35
(Selman, 9th ed., pp. 145-146)
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