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10 Cards in this Set
- Front
- Back
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when should mobile radiography be used |
only when patient cannot come to department |
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capacitor discharge mobile |
discharge of high voltage to capacitor supplied by batteries
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what is a capacitor |
electrical device for accumulated and storing charge |
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in capacitor discharge mobiles, the expose switch |
causes the rectification circuit to charge capacitor in generator, not the tube |
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dark current |
in capacitor discharge mobiles when x-rays come out when you're not exposing |
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batter operated mobile units |
nickel-cadmium batteries (rechargeable), provides power to x-ray tube, DC converter, step up transformer and rectifier to get desired kV |
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battery operated mobile units |
one set of batteries power the motor to drive unit, another set powers the x-ray generating components |
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when using mobile x-ray units, must keep careful attention to |
positioning, cassette placement, grid use, others |
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safety precautions (4) |
key to turn on/off, front bumper will stop movement if impacted, clean regularly, take precautions against radiation exposure to self and others |
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radiographer's role for radiation safety |
protect everyone, announce exposure, carry lead aprons, don't put parts in primary beam, gonad shielding, maximize your distance from exposure, avoid repeats |
