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Imaging 2
Distortion
Question | Answer |
---|---|
When does elongation occur? | when the tube or the IR is improperly aligned |
When does foreshortening occur? | ONLY when the part is improperly aligned. |
Changes in the tube angle can only cause.... | elongation. |
The greater the SID, the smaller... | the magnification. |
Distortion is.. | the second of the two geometric properties affecting radiographic image quality. |
Distortion is a misrepresentation of the.. | size and shape of the structures being examined. |
Size distortion can only be magnification with film/screen. With traditionally film/screen systems minification is impossible, due to... | the divergent property of x-ray photons. |
reduced magnification size distortion increases the ... | resolution of recorded detail. |
Magnification size distortion is controlled by.. | positioning the body part and tube to maximize SID while minimizing OID. |