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13 Cards in this Set
- Front
- Back
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filtration is the process of |
eliminating low energy x-ray photons |
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filtration is done by |
the insertion of absorbing materials into the primary beam |
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inherent filtration |
from within the design of the tube and housing |
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types of inherent filtration |
glass envelope, dielectric oil, thickness of window of the glass housing |
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added filtration |
found outside of the tube and housing and before the IR |
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total filtration |
sum of inherent and added filtration |
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total filtration should absorb _ of low energy and _ of high energy x-ray photons |
lots, few |
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exposure factors must _ to maintain the same exposure on IR |
increase |
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half value layer (HVL) |
amount of absorbing material that will reduce the intensity of the primary beam to half its original value |
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compound filtration |
uses 2 or more materials that compliment each other in absorption ability |
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with compound filtration, each layer absorbs the _ photons of the _ layer |
characteristic, previous |
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compound filters are also called |
k-edge filters |
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compensating filters |
compensats for unequal absorption within the patient when part is of differing thickness and/or composition |
