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RADT 456
ARRT Regristry Review Content Covering Equipment Operation and Quality Control
| Question | Answer |
|---|---|
| In what two way s to x-rays occur? | Bremsstrahlung and Characteristic |
| Brems radiation comprises of how much of the x ray beam | 70-90% |
| What does wavelength refer to | the distance between two consecturive wave creasts |
| What does frequency refer to? | the number of cycles per second |
| Shorter wavelength is associated with: | higher frequency, higher energy, and increased ionizing potential |
| What does the term primary beam refer to | the xray beam that emerges from the xray tube focal spot, before it strikes anything. |
| List 5 of the properties of x ray photons | x rays are not perceptible by the senses, x rays travel in straight lines, x rays travel at the speed of light, x rays are electrically neutral, x rays have a penetrating effect on matter. |
| Xray photons can do what three things to the part it is interacting with | pass through the part, be absorbed by the part, or scatter within the part. |
| What are the 4 types of imaging equipment | fixed, mobile, didicated, and digital/electronic |
| What is difference between a generator and a motor | generators change mechanical energy to electrical energy and motors change electrical energy to mechanical energy |
| What are th two types of high voltage transformers | step up and step down |
| What is an autotransformer | it is a fixed ratio transformer, or the turns relationshhip is constant |
| What is the anode made of | graphite/molybdenum disk, tungsten/rhenium focal track, and copper stern |
| Why is tungsten used as target material | high atomic number, high melting point, thermal conductivity |
| What is the line focus principle | the effective focal spot is always smaller than the actual focal spot |
| In what two ways are safe x ray tube limits illustrated | tube rating charts, and anode cooling curve |
| Name the three portions of the radiographic circuit | low-voltage/ primary circuit, the filament circuit, and the high-voltage/ secondary circuit |
| name the differnt types of xray timers | mechanical, synchronous, impulse, electronic, mAs, and AEC |
| What are the components of the primary circuit | main switch/circuit breaker, autotransformer, kV selector switch, line voltage compersator, timer, primary coil of HV transformer, exposure switch |
| What are the components of the secondary circuit | secondary coin of HV transformer, mA meter, rectifiers, and x ray tube |
Created by:
bnpickrell
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