Computed Tomography Technologist Practice Exam 2025 – All-in-One Guide for Exam Success!

The determination of the amount of RAW data used during image reconstruction is a fundamental aspect of the DFOV, or Display Field of View. DFOV refers to the area of the image that is displayed after image reconstruction and can significantly affect what portion of the acquired data is utilized during this process.

When setting the DFOV, the technologist selects how much of the raw data collected during the scan will be displayed in the final image. A larger DFOV includes more raw data, which can contribute to a more comprehensive view of the anatomy or area of interest being examined, while a smaller DFOV focuses on a specific region, potentially increasing the quality of the image in that area by concentrating on fewer data points.

Therefore, the DFOV not only influences the visible part of the image but also directly correlates to the amount of raw data included in the final reconstruction. This relationship is crucial for ensuring that the images produced are both clinically relevant and diagnostically valuable while providing the ability to optimize image quality based on the clinical needs.