Term
| the intensity of the x-ray beam determines the: |
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Definition
| number of x-rays in the useful beam(quantity) |
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Term
| x-ray intensity is measured in: |
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Definition
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Term
| mAs and x-ray quantity are: |
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Definition
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Term
| kVp and x-ray quantity/intensity |
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Definition
| x-ray quantity is proportional to the kVp squared |
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Term
| what happens when you increase the kVp and decrease mAs |
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Definition
| there is no change in the image but the patient dose is significantly reduced |
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Term
| x-ray quantity and distance |
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Definition
| inversely proportional to the square |
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Term
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Definition
| the thickness of absorbing material necessary to reduce the x-ray intensity to half of its original value |
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Term
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Definition
| the reduction in x-ray intensity that results from absorption and scattering |
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Term
| what is the best way of specifying x-ray quality |
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Definition
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Term
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Definition
| compensates for differences in subject radiopacity (used on body parts that have varying thickness (femur)) |
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Term
| What is the minimum filtration required for all x-ray beams? |
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Definition
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Term
| what are the 2 types of filtration that need to add up to 2.5 mm? |
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Definition
1. inherent (within the tube)
2. added (added on to the inherent) |
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Term
| what are the 5 ways that x-rays interact with matter? |
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Definition
1. coherent scatter
2. Compton scatter
3. photoelectric effect
4. pair production
5. photodisinigration |
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Term
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Definition
| when an x-ray ejects an outer shell electron and is then deflected out again at any angle reducing the energy of the x-ray (reduces image contrast creating fog/noise) |
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Term
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Definition
| when an x-ray hits an inner shell electron and gets totally absorbed |
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