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RADT465: Equip & QC
ARRT Registry Review Covering Equipment Operation and QC
| Question | Answer |
|---|---|
| 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 |
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