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7 Cards in this Set
- Front
- Back
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What is Anode Heel Effect? |
A variation of the intensity of Xray emitted by the anode depending on the direction of emission We see different levels of exposure throughout the image Intensity is greater on cathode side of tube |
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What causes Anode Heel Effect? |
the line focus principle |
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When is the Anode Heel Effect more noticeable? |
Small cassette Shorter SIDs (the farther the source to the IR the bigger the beam) Steeper anode angles (more absorption) |
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Anode end should be placed at ________ end of the table. (Head or Foot) |
Head - We want thinner parts under the anode where there is less radiation |
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How do we use anode heel effect to our advantage? |
Use more intense radiation to penetrate thicker parts |
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Off-focus Radiation |
AKA extra focal radiation Xray photons that are not produced at the focal spot
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What produces ghost images? |
Off focus radiation |
