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RAD456: Reg. Review
ARRT Registry Review: Equipment Operation and Quality Control
| Question | Answer |
|---|---|
| How often must radiographic equipment be checked for linearity and reproducibility? | Annually Lange Q&A pg. 259 |
| Light sensitive AEC devices are known as what? | Phototimers Lange Q&A pg. 260 |
| The electron cloud within the xray tube is the product of a process called what? | Thermionic emission Lange Q&A pg. 260 |
| Of what material is the filament of the cathode assembly made of? | Tungsten Lange Q&A pg. 261 |
| The voltage ripple associated with a three-phase, 12-pulse rectified generator is about what percentage? | 13-14% Lange Q&A pg. 263 |
| As electrons impinge on the anode surface, less than 1% of their kinetic energy is changed to what? | x-rays Lange Q&A pg. 264 |
| The regular measurement and evaluation of radiographic equipment components and their performance is most accurately termed as what? | Quality control Lange Q&A pg. 264 |
| When the radiographer selects the kilovoltage on the control panel, which device is adjusted in the circuit? | Autotransformer Lange Q&A pg. 264 |
| Star and wye configurations are related to what? | Three-phase transformers Lange Q&A pg. 264 |
| The device used to test the accuracy of the x-ray timer is termed what? | Spinning top Lange Q&A pg. 265 |
| The kV settings on radiographic equipment must be tested annually and must be accurate to within how much? | +/- 4 kV Lange Q&A pg. 265 |
| To maintain image clarity in an image-intensifier system, the path of electron flow from the photocathode to the output phosphor is controlled by what? | Electrostatic lenses Lange Q&A pg. 267 |
| What term describes the amount of electric charge flowing per second? | Current Lange Q&A pg. 267 |
| That portion of the remnant x-ray beam representing anatomical details having desirable quality is referred to as? | Signal Lange Q&A pg. 268 |
| The image intensifier's input phosphor generally is composed of what? | Cesium iodide Lange Q&A pg. 273 |
| How often are radiographic equipment kV settings required to be evaluated? | Annually Lange Q&A pg. 272 |
| The image-intensifier tube's input phosphor functions to convert what to what? | X-rays to light Lange Q&A pg. 273 |
| What is the term used to describe the phenomenon of losing image brightness at the edges of the surface due to a curved imaging plate? | Vignetting Equipment Operation and Quality Control (In-class handout) |
| What is the number of cycles of sinusoidal wavelength per second in the U.S.? | 60 cycles per second (Equip. Operation & Quality Control (In-class handout) |
| What is the formula for Ohm's Law? | V=IR V=Voltage I=Current R=Resistance In-class Handout (Equip Operation) |
| What are the PSP plates cleaned with? | Anhydrous ethanol In-class handout |
Created by:
jlemmons1
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