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13 Cards in this Set
- Front
- Back
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What refers to the distinctness or shrpness of the sturctural line that make up a recorded image?
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Recorded Detail
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Geometric Properties are generally associated with what?
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Sharpness
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Geometric unsharpness is effected by what 3 things?
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focal spot size, SID, and OID
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As focal spot increases, unsharpness increased and recorded detail decreases.
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True.
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Small focal spots increase unsharpness and decrease recorded detail.
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False. (It decreases unsharpness and increase recorded detail.)
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When selecting your focal spot you always want to select the larger one.
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False.
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Increasing your SID does what to unsharpness?
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Decreases unsharpness (increased detail)
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Increasing the OID increases the amount of unsharpness and decreases the recorded detail.
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TRUE
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Increased amount of unsharpness is achieved by decreasing the OID.
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False.
(Decrease OID = Decreased unsharpness) |
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OID has a greater effect on geometric unsharpness than does the focal spot or SID.
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True.
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Increasing the relative speed of the intensifying film-screen does what to recorded detail and unsharpness?
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decreases detail, increases unsharpness.
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Decreases relative speed, increases recorded detail and decreases unsharpness.
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True
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The ability of the imaging system to resolve or distinguish between two adjancent structures is ?
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Resolution.
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