What does adjusting the Detector Field of View (DFOV) in a CT scan do?

Adjusting the Detector Field of View (DFOV) in a CT scan primarily influences how much of the collected raw data is utilized to generate the final image. By modifying the DFOV, the technologist can control the area of interest that is reconstructed from the acquired data. A larger DFOV might include more anatomical structures, but it can also result in lower spatial resolution within the selected area. Conversely, a smaller DFOV focuses more closely on a specific region, enhancing image quality and detail by using a smaller portion of the collected data.

This adjustment is crucial for optimizing image quality while still capturing the necessary diagnostic information for the clinician. Understanding the significance of DFOV helps a technologist effectively tailor scans to patient needs and improve diagnostic accuracy.