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Stack #130118
| Question | Answer |
|---|---|
| caliper | device used to measure part thickness |
| fixed kvp charts | the kvp is held constant for a given range of subject densities while the mas is varied to achieve an appropriate image density |
| variable kvp fixed ma chart | kvp is adjusted for changes in part thickness while maintaining a fixed mas |
| detectors | devices used to measure radiation in an AEC system |
| minimum response time | the shortest exposure time that a particular system can produce |
| backup time | maximum length of time the x-ray exposure will continue |
| three | number of detectors an AEC system generally have |
| good positioning skills | most important skill a radiographer should possess when using an AEC system |
| anatomically programmed radiography | a radiographic system that combines an AEC system with a technique chart that is computerized to correspond to anatomical procedures |
| six hundred mas | backup time exposure should not exceed this |
| one milisecond | minimum response time in order to cut exposure |
| autotomography | breathing technique |
| APR | anatomically programmed radiography |
| light paddles | detectors used in photomultiplier tube |
| photomultiplier tube | type of AEC that gives off light when radiation hits it |
| electricity | photomultiplier tube converts light to this |
| ionization chamber | hollow cell that contains air and is connected to the timer circuit by an electrical wire |
| entrance type | type of AEC whose detectors are positioned in front of the cassette |
| exit type | type of AEC whose detectors are behind the cassette |
| Kilovoltage peak | controls the potential difference between the cathode and anode and causes the electrons to flow between cathode and anode |
| MA | factor controlling the number of electrons which wil flow from cathode to anode during x-ray exposure |
| tube current | term used to describe the number of electrons flowing across the tube |
| small focal spot | will produce more radiographic detail when used; most often with extremities |
| Critical | part measurement for variable kvp/fixed mas charts is what |
| Shorter | the scale of contrast for variable kvp/fixed mAs is what |
| Variable | is what radiographic contrast is for variable kvp/fixed mAs |
| Higher | patient dose is thisfor variable kvp/fixed mAs |
| increased | tube heat load is this for variable kvp/fixed mAs |
| less critical | part measurement for fixed kvp/variable mAs |
| longer | contrast scale for fixed kvp/variable mAs |
| standardized | radiographic contrast for fixed kvp/variable mAs |
| lower | patient dose for fixed kvp/variable mAs |
| decreased | tube heat load for fixed kvp/variable mAs |
Created by:
quietone055
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