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13 Cards in this Set
- Front
- Back
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How many feet away do you have to be for scatter to be dissipated? |
6ft away |
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Ways to reduce radiation exposure |
Wear PPE Collimate Limit retakes and unnecessary xrays Never put yourself in the primary beam Wear a dosimeter Maintenance machine regularly Limit exposure time Use sandbags to absorb scatter |
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Somatic Damage |
Happens now but effects your body later Example: Cancer |
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Can you be in the primary beam if you are wearing lead gloves |
Yes |
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Types of exposure dosimeters |
Thermoluminescent (TLD) Film badges electronic personal (EPD) |
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Tissues most sensitive to radiation |
Skin thyroid gland gonads lens of eyes fetal tissue colon |
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Fluoroscopy |
Presentation of a continuous x-ray image, which involves directing the x-ray beam through the patient and onto an image intensifier. -No more than 5 minutes of exposure -Very high level of radiation exposed |
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How often should you have your xray machine maintenance? |
Service yearly -more often for older machines *If you see a spike in exposure level on dosimeter service your machine |
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What lead equivalent do gloves and gowns need to be in order to be safe |
0.5-mm lead equivalent |
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What is scatter or secondary radiation? |
When the radiation from the beam is scattered due to an obstruction along the way to the patient |
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Primary radiation |
energy exerted directly by the xray beam |
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What are three factors that must be set correctly to produce a properly exposed radiograph? |
mA kVp Time |
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Exposure time |
amount of time for radiation to leave tube |
