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The electron cloud within the x-ray tube is formed by what process?
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What is the voltage ripple associated with a three-phase, six-pulse rectified generator?
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RADT 465 Eq Op & QC
ARRT Registry Review Covering Equipment Operation and Quality Control
| Question | Answer |
|---|---|
| The electron cloud within the x-ray tube is formed by what process? | Thermionic emission (Bushong, p. 118) |
| What is the voltage ripple associated with a three-phase, six-pulse rectified generator? | 13% (Bushong, p. 99-100) |
| What is a slit camera used to measure? | Focal-spot size and spatial resolution (Bushong, p. 307-308) |
| What is the minimum response time of an AEC? | The shortest possible exposure time (Carlton and Adler, 102-103) |
| What are radiopaque objects used for? | To test the congruency of a x-ray beam with the light (Carlton and Adler, p. 484) |
| What occurs as window level increases? | Brightness increases (Fosbinder and Orth, p. 208) |
| What is the definition of quality control? | Regular measurement and evaluation of radiographic equipment components and their performance (Fosbinder and Orth, pp. 222-223) |
| The kV settings must be within what range during annual testing? | +/- 4 kV (Fosbinder and Orth, pp. 223-225) |
| What controls the path of electrons from the photocathode to the output phosphor? | Electrostatic lenses (Carlton and Adler, pp. 569-570) |
| What does the input phosphor convert in the image-intensifier system? | X-rays to light (Carlton and Adler, p. 536) |
| What is the formula for heat units for a three-phase, 12-pulse generator? | Time X mA X kV X 1.41 (Carlton and Adler, p. 121) |
| How often should linearity and reproducibility be checked on radiographic equipment? | Annually (Fosbinder and Orth, pp. 223-225) |
| What is located in the glass envelope that is a part of the induction motor? | Rotor (Carlton and Adler, p.73) |
| What is located outside of the glass envelope that is a part of the induction motor? | Stator (Carlton and Adler, p. 73) |
| How frequently are kV settings checked in radiographic equipment? | Annually (Fosbinder and Orth, pp. 223-225) |
| What is the input phosphor composed of in the image intensifier? | Cesium iodide (Bushong, p. 360) |
| During fluoroscopic exams, what compensates for changing thickness (patient/part)? | Automatic brightness control (Bushong, 360) |
| What are CT x-ray tubes more likely to be associated with? | Pulsed x-ray beam (Bushong, pp. 429-430) |
| What is included with the total brightness gain of an image intensifier? | Flux gain and minification gain (Bushong, 351) |
| What device changes alternating current to unidirectional current? | Solid-state diode (Bushong, p.119) |
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