What data acquisition technique produces a three-dimensional volume of anatomical data?

The three-dimensional volume of anatomical data is produced by volume scanning. This technique captures data continuously as the CT scanner rotates, allowing for the acquisition of thin slices that can then be reconstructed into a comprehensive three-dimensional image of the anatomy of interest.

Volume scanning, also referred to as "spiral" or "helical" scanning in some contexts, collects data in a helical pattern as the patient moves through the scanner, enhancing the speed and detail with which images can be generated. The resulting volumetric data can be manipulated and visualized in multiple planes, providing a more complete picture of the anatomical structures compared to traditional scanning methods.

While axial scanning captures individual slices in a sequential manner, it does not inherently create a 3D volume in the same way that volume scanning does. Helical scanning does play a role in creating volume data but is often described as a method that leads to volume data rather than being categorized simply as volume scanning.

Thus, volume scanning is the primary technique explicitly focused on producing fully reconstructed three-dimensional anatomical data, making it the correct choice for this question.