Which configuration yields higher quality CBCT images?

• A. 180 degrees
• B. 90 degrees
• C. 360 degrees
• D. 120 degrees

Answer: (C)

Completing a full 360-degree rotation around the patient yields higher quality CBCT images because it collects projection data from every direction, giving the reconstruction algorithm a well-sampled, complete dataset. This full angular sampling reduces artifacts and improves spatial resolution and contrast uniformity. In contrast, partial-angle scans leave gaps in data, leading to reconstruction artifacts such as streaks and shading and overall poorer image quality. So the configuration with a complete 360-degree acquisition provides the best image quality.