What are the two components of image distortion?

What are the two components of image distortion?

• A. Loss of detail and noise
• B. Contrast and brightness
• C. Enlargement of the size of the anatomy and misrepresentation of the shape of the anatomy.
• D. Geometric distortion

Answer: (C)

Distortion on an image occurs when the object doesn’t appear at its true size or true shape. The two components are enlargement (the image is larger than the actual anatomy) and shape distortion (the contour of the anatomy is misrepresented, often appearing foreshortened or elongated). Enlargement happens when the object is at a different distance from the image receptor than intended, causing magnification. Shape distortion results from improper alignment, such as the object not lying parallel to the image plane, which changes the apparent contour. The other options describe changes in image quality or density, not distortion.

Distortion on an image occurs when the object doesn’t appear at its true size or true shape. The two components are enlargement (the image is larger than the actual anatomy) and shape distortion (the contour of the anatomy is misrepresented, often appearing foreshortened or elongated). Enlargement happens when the object is at a different distance from the image receptor than intended, causing magnification. Shape distortion results from improper alignment, such as the object not lying parallel to the image plane, which changes the apparent contour. The other options describe changes in image quality or density, not distortion.