Term
| factors that control distortion are directly related to ___ |
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Definition
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Term
| size distortion is a funtion of __ and ___ |
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Definition
decreased SID
increased OID |
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Term
| reduced magnification ___ the resolution of the recorded detail |
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Definition
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Term
| magnification is controlled by ___ and ___ to maximize SID and minimize OID |
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Definition
positioning body part
xray tube |
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Term
| misrepresentation by unequal magnification of the actual shape |
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Definition
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Term
| two types of shape distortion |
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Definition
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Term
| occurs when the tube or IR are improperly aligned |
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Definition
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Term
| occurs when part being examined is not properly aligned |
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Definition
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Term
| two types of size distortion |
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Definition
magnification
diffuse blurring |
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Term
| three geometric principles of distortion |
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Definition
object thickness
object position
spatial distortion |
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Term
| due to OID, thicker part will have more distortion |
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Definition
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Term
| when object plane and image plane are not parallel |
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Definition
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Term
| degree of distortion affected by objects ___ |
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Definition
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Term
minimal along the CR
as object shifts laterally, spatial distortion increases |
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Definition
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