ARRT Regristry Review Content Covering Equipment Operation and Quality Control
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| In what two way s to x-rays occur? | Bremsstrahlung and Characteristic
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| Brems radiation comprises of how much of the x ray beam | 70-90%
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| What does wavelength refer to | the distance between two consecturive wave creasts
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| What does frequency refer to? | the number of cycles per second
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| Shorter wavelength is associated with: | higher frequency, higher energy, and increased ionizing potential
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| What does the term primary beam refer to | the xray beam that emerges from the xray tube focal spot, before it strikes anything.
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| 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.
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| 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.
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| What are the 4 types of imaging equipment | fixed, mobile, didicated, and digital/electronic
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| What is difference between a generator and a motor | generators change mechanical energy to electrical energy and motors change electrical energy to mechanical energy
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| What are th two types of high voltage transformers | step up and step down
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| What is an autotransformer | it is a fixed ratio transformer, or the turns relationshhip is constant
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| What is the anode made of | graphite/molybdenum disk, tungsten/rhenium focal track, and copper stern
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| Why is tungsten used as target material | high atomic number, high melting point, thermal conductivity
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| What is the line focus principle | the effective focal spot is always smaller than the actual focal spot
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| In what two ways are safe x ray tube limits illustrated | tube rating charts, and anode cooling curve
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| Name the three portions of the radiographic circuit | low-voltage/ primary circuit, the filament circuit, and the high-voltage/ secondary circuit
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| name the differnt types of xray timers | mechanical, synchronous, impulse, electronic, mAs, and AEC
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| 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
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| What are the components of the secondary circuit | secondary coin of HV transformer, mA meter, rectifiers, and x ray tube
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