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21 Cards in this Set
- Front
- Back
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Ionizing Radiation |
Radiation that produces positively and negatively charged particles when passing through matter |
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Radiation |
Energy in the form of particles or electromagnetic waves |
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Non-ionizing radiation |
Radiation that does not have sufficient energy to dislodge orbital electrons |
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Exposure |
The amount of ionization produced in air when ionizing radiation is present. Units: C/kg or mR |
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Absorbed dose |
The amount of energy that is deposited in a material per unit mass of the material. Units: mGY |
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Effective Dose |
A quantity that is a measure of general harm in humans. Units: mSv -best overall measure of the biologic effects of ionizing radiation |
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Heinrich Hertz and Phillip Lenard discovered... |
The cathode ray and added a thin aluminum window while experimenting with the Crookes tube |
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What was the paper soaked with that Lenard observed a glow from? |
Barium platinocyanide - First accidental discovery of X-rays |
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What did Wilhelm Roentgen cover his crooks tube with and what year? |
Black photographic paper -1895 |
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What increased when Roentgen brought the object closer to the tube? |
Intensity of the glow |
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Who developed fluoroscopy in 1898? |
Thomas Edison |
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Why were x-ray rooms in the basement |
Hospitals were suspicious of x-rays Newly arrived doctors had to manage them |
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What were some early negative effects of x-rays |
Burning, infection, swelling, cancer, and eventual amputation |
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What were gas tubes replace by and who invented it? |
Coolidge tube -invented by William Coolidge -Reduce the amount of blurring and shorten exposure time -Modern x-ray tube is based on the technology of the Coolidge too |
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BERT |
Background Equivalent Radiation Time |
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Alliance for radiation safety in pediatric imaging |
- founded in 2007 - overall common purpose is to reduce the radiation dose for pediatric patients |
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NEXT |
Nationwide evaluation of X-ray trends |
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TRACE |
Tools for radiation awareness and community education -a radiation dose awareness and dose reduction program for patients |
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Diagnostic Efficacy |
the degree to which the diagnostic study accurately reveals the presence or absence of disease in the patient while adhearing to radiation safety guidelines |
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ALARA |
As low as reasonably achievable; Synonymous with optimization for radiation protection (ORP) |
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3 cardinal rules of radiation protection |
Time, distance, shielding |
