Distortion that occurs when the x-ray beam is angled along the long axis of a part is:

Distortion that occurs when the x-ray beam is angled along the long axis of a part is:

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

Answer: (A)

Distortion comes from misalignment between the x‑ray beam, the part, and the image receptor. When the x-ray beam is directed along the long axis of a structure, the rays travel parallel to that axis, so the image becomes a projection that stretches the length of the object. This makes the part appear longer on the radiograph than it really is, which is the elongation you’re seeing. It’s a shape distortion specific to the way the beam is angled relative to the part, not a simple size change from distance to the receptor. Magnification, by contrast, results from greater distance between the part and the receptor, not from angling along the axis. To minimize elongation, position the part so that the beam is perpendicular to the part’s long axis and the receptor, adjusting angulation as needed.

Distortion comes from misalignment between the x‑ray beam, the part, and the image receptor. When the x-ray beam is directed along the long axis of a structure, the rays travel parallel to that axis, so the image becomes a projection that stretches the length of the object. This makes the part appear longer on the radiograph than it really is, which is the elongation you’re seeing. It’s a shape distortion specific to the way the beam is angled relative to the part, not a simple size change from distance to the receptor. Magnification, by contrast, results from greater distance between the part and the receptor, not from angling along the axis. To minimize elongation, position the part so that the beam is perpendicular to the part’s long axis and the receptor, adjusting angulation as needed.