Conceptual Overview

The operation of CTSim begins with the phantom object. A phantom object consists of geometric elements. A scanner is specified and the collection of x-ray data, or projections, is simulated. This projection data can be reconstructed using various user-controlled algorithms producing an image of the phantom object. These reconstructions can be visually and statistically compared to the original phantom object.

In order to use CTSim effectively, some knowledge of how CTSim works and the approach taken is required. CTSim deals with a variety of object, but the two primary objects that we need to be concerned with are the phantom and the scanner.