Final answer:
The d. aliasing artifact is considered an equipment-induced CT image artifact that can occur in CT scans.
Step-by-step explanation:
The correct answer is d. aliasing artifact.
CT (Computed Tomography) is a medical imaging technique that uses X-rays and computer algorithms to create detailed cross-sectional images of the body.
However, when certain factors interfere with the imaging process, artifacts can appear in the CT images.
Aliasing artifact is caused by improper sampling and can result in the appearance of jagged or wavy edges in the images.
It occurs when the frequency of the signal being sampled is higher than the Nyquist frequency, leading to a distortion of the image.