Final answer:
Cone beam artifact can cause distortions and inaccuracies in CT images, resulting in a pear-shaped appearance.
Step-by-step explanation:
Cone beam artifact can affect the appearance of a CT image by causing distortions and inaccuracies in the image.
Cone beam artifacts are often caused by the off-center positioning of the object being imaged and can result in aberrations such as coma and spherical aberration.
These aberrations can lead to a distorted and pear-shaped appearance of the image.