The 3D shaded surface displays on a CT scanner are created from processed image data, which consists of compiled cross-sectional 'slices' obtained from X-rays passed through the body, resulting in detailed three-dimensional representations used in medical diagnostics.
3D shaded surface displays on a CT scanner are primarily performed using image data. The image data consists of multiple cross-sectional images or "slices" that have been acquired by passing X-rays through the body from various angles, detecting their absorption levels, and processing these images through sophisticated computer algorithms.
It's this compiled image data that allows for the creation of detailed three-dimensional visualizations of structures within the body, enhancing specific types of tissue when necessary. This process markedly differs from working directly with raw data or attenuation profiles, which are more about the initial capture of information that needs further processing to be clinically useful.
So, the capability for detailed imagery through CT scanning is a result of intricate computer processing of image data, enabling the rendering of 3D visualizations that can aid significantly in medical diagnostics and treatment planning.