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RADT465: Equip & QC

ARRT Registry Review Covering Equipment Operation and QC

QuestionAnswer
The type of x-ray tube designed to turn on and off rapidly, providing multiple shorts, precise exposures, is _______________. Grid-controlled (Saia, Lange Q&A, pg. 276, 296)
The minimum response time of an automatic exposure control is its ______________ possible exposure time. Shortest (Saia, Lange Q&A, pg. 280, 298)
The electron cloud within the x-ray tube is the product of a process called _______________________. Thermionic emission (Saia, Lange Q&A, pg. 280, 298)
The operation principle of ________________ is when a parallel-pate ionization chamber receives a particular charge as x-ray photons travel it. AEC (Saia, Lange Q&A, pg. 281, 299)
Congruence of the x-ray beam with the light field is tested using _____________________. Radiopaque objects (Saia, Lange Q&A, pg. 281, 299)
As window level increases, brightness _____________. Increases (Saia, Lange Q&A, pg. 282, 300)
The _________ converts electrical energy to mechanical energy. Motor (Saia, Lange Q&A, pg. 282, 301)
What is the function of a phototimer? To terminate the x0ray exposure once the IR is correctly exposed. (Saia, Lange Q&A, pg. 282, 301)
What type of radiation production results from a high-speed electron entering the tungsten target is attracted to the positive nucleus of a tungsten atom and, in the process, is decelerated? Bremsstrahlung radiation (Saia, Lange Q&A, pg. 284, 303)
________________ is the regular measurement and evaluation of radiographic equipment components and their performance. Quality control (Saia, Lange Q&A, pg. 284, 304)
The procedure whose basic operation involves reciprocal motion of the x-ray tube and film is _________________. Tomography (Saia, Lange Q&A, pg. 284, 304)
What is used during fluoroscopy procedures is used to adjust the automatic brightness control? Kilovoltage (kv) and milliamperage (mA) (Saia, Lange Q&A, pg. 284, 304)
What device is adjusted when the radiographer selects kilovoltage on the control panel? Autotransformer (Saia, Lange Q&A, pg. 284, 304)
What is the device that directs the light emitted from the image intensifier to various viewing and imaging apparatus? Beam splitter (Saia, Lange Q&A, pg. 285, 305)
As electrons hit the anode surface, less that 1% of their kinetic energy is changed to ___________. x-rays (Saia, Lange Q&A, pg. 285, 305)
The kV settings on radiographic equipment must be tested annually and must be accurate to within __________. +/- 4 kV (Saia, Lange Q&A, pg. 286, 307)
A device used to ensure reproducible radiographs, regardless of tissue-density variations, is the _______________. AEC (Saia, Lange Q&A, pg. 287, 308)
_______________ is used to change alternating current to unidirectional current. A solid-state diode (Saia, Lange Q&A, pg. 287, 308)
To maintain image clarity in an image-intensifier system, the path of electron flow from the photocathode to the output phosphor is controlled by _______________. Electrostatic lenses (Saia, Lange Q&A, pg. 287, 309)
The image-intensifier tube's input phosphor functions to convert _______ to _________. x-rays, light (Saia, Lange Q&A, pg. 287,309
Created by: asexsonlyl