Elongation occurs as a distortion when there is angulation of the object relative to the image receptor. Which of the following lists the correct related distortion?

Elongation occurs as a distortion when there is angulation of the object relative to the image receptor. Which of the following lists the correct related distortion?

• A. Foreshortening
• B. Elongation
• C. Magnification
• D. Minification

Answer: (B)

Distortion in radiography comes from geometric misalignment among the X-ray beam, the object, and the image receptor. When the object is angled relative to the receptor, the projection length changes. If the object is angled away from the receptor, the image appears longer than the actual object—this is elongation. If the object were angled toward the receptor, the projection would shorten, which is foreshortening. Magnification, on the other hand, results mainly from increased distance between the object and the receptor (or from beam geometry), not from angulation alone. Minification isn’t a standard term used for these distortions. So, the distortion described by angulation relative to the image receptor is elongation.

Distortion in radiography comes from geometric misalignment among the X-ray beam, the object, and the image receptor. When the object is angled relative to the receptor, the projection length changes. If the object is angled away from the receptor, the image appears longer than the actual object—this is elongation. If the object were angled toward the receptor, the projection would shorten, which is foreshortening. Magnification, on the other hand, results mainly from increased distance between the object and the receptor (or from beam geometry), not from angulation alone. Minification isn’t a standard term used for these distortions. So, the distortion described by angulation relative to the image receptor is elongation.