Question

Which of the following techniques reduces edge gradient artifacts?

a) scanning with thinner slices
b) decreasing data sampling rates
c) scanning with thicker slices
d) using detectors with large apertures

Answer 1

To reduce edge gradient artifacts, it is effective to scan with thinner slices, which improves the edge resolution by decreasing volume averaging on the edges of structures.

Step-by-step explanation:

The question pertains to reducing edge gradient artifacts in imaging, which is an important issue in fields such as medical imaging. One technique that can reduce edge gradient artifacts is scanning with thinner slices. By using thinner slices, there is less volume averaging, which means that the transition between different types of tissues or materials is captured in finer detail. This increases the resolution at the edges, making it easier to distinguish between different structures and reducing the artifacts that can obscure details at the edges of these structures. In contrast, using detectors with large apertures, decreasing data sampling rates, or scanning with thicker slices would not have this effect, and might even exacerbate edge artifacts rather than reduce them.