Final answer:
Option 1. The RF artifact 'zipper' appears as a pattern of parallel lines on an MRI image, resulting from leaks in the RF shielding or faulty RF filters.
Step-by-step explanation:
The appearance of an RF (radio frequency) artifact known as a “zipper” in the context of medical imaging, like MRI (Magnetic Resonance Imaging), is a pattern of parallel lines. This type of artifact can occur due to leaks in the RF shield of the MRI room or if the RF filter is not functioning properly. Zipper artifacts can compromise the quality of the image by introducing unwanted signal into the image, manifesting as these parallel lines across the image that do not represent the true anatomy or pathology of the patient.
The appearance of an RF (Radiofrequency) artifact known as "zipper" in the context of medical imaging, particularly in magnetic resonance imaging (MRI), is characterized by a pattern that resembles parallel lines. It is caused by stray RF signals entering the MRI scanner's field of view, and can degrade the quality of the image. This artifact can occur due to various reasons, such as inadequate RF shielding, errors in the frequency encoding, or equipment malfunction.