Question

Which of the following affects the severity of metal artifacts?

1) the quantity, composition and shape of the metal
2) the slice thickness
3) the number of data sampling points

Answer 1

Metal artifacts in medical imaging are affected by the quantity, composition, and shape of metal, slice thickness of the scan, and the number of data sampling points used.

Step-by-step explanation:

The severity of metal artifacts in medical imaging, especially in computed tomography (CT) scans, can be influenced by several factors:

• The quantity, composition, and shape of the metal present in the scan field. Larger amounts of metal, metals with a higher atomic number, and irregular shapes tend to produce more severe artifacts.
• The slice thickness used in the CT scan. Thinner slices can reduce the appearance of artifacts because they capture less metal within each slice, leading to improved resolution.
• The number of data sampling points. The more sampling points, or the finer the sampling grid, the better the scanner can compensate for the presence of metal and reduce artifacts.