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Imaging 2

Distortion

QuestionAnswer
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.
Created by: chrystal87