Final answer:
Post-processing applications of CT image data involve manipulating and enhancing the images to improve visualization and diagnostic accuracy.
Step-by-step explanation:
Computed Tomography (CT) is a medical imaging technique that uses computers to analyze cross-sectional X-ray images obtained from a patient. It is commonly used to obtain two-dimensional views of scanned areas in the body. Post-processing applications of CT image data involve manipulating and enhancing the images to improve visualization and diagnostic accuracy. These include image reconstruction, image segmentation, and 3D rendering. Therefore, all of the listed options are considered post-processing applications in CT imaging.