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12 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What are X-rays?
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Photons which are minute bundles of energy traveling in wavelengths
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Why are x-rays dangerous?
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X-rays cause cells to be ionized
What is ionization? |
ionization is when an atom loses or gains an electron changing its charge. X-rays always knock out electrons
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What is a soft X-ray?
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longer wavelengths and less penetration.
what is a hard x-ray? |
shorter wavelengths and more penetration
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What does it mean when we say X-rays are heterogenius?
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They are not static, they can vary, they can be soft or hard
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What is the max kVp for diagnositic X-rays?
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150kVp
What max kVp for x-rays is radiation therapy? |
1 to 16 million kVp
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What is a somatic effect of radiation?
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effect on the individual, like reddening of the skin (ERYTHEMA)
What is a genetic effect |
effect on future generations
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What is the relationship between mA and ionization?
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Directly proportional, you double the mA and you double the ionization.
How about kV and ionization? |
when kV increases ionization also increases but unlike mAs it is not directly proportional
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What are the 3 methods of tracking x-ray dosage received by people?
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RAD
REM R what do they stand for? |
RAD-radiation absorbed dosage
REM-Roentgen Equivalent Man R- Roentgen |
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RAD's REM's and R are all equivalent?
True or False |
True
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What is the unit of measurement for dosage badges?
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millirems
how many are we allowed per year as radialographers? |
5000 MREM's or 5 REM
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Why is the word "equivalent" used in Roentgen Equivalent Man (REM) used?
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the dosage is estimated on the different body parts based upon the reading on the badge
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What does R (Roentgens) measure?
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amount of radiation, usually in a lab situation, measuring the amount of radiation of X and gamma rays in the air.
what is the unit of measure? |
MR or milliroentgens
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