Computer-aided disease detection software effectively helps medical professionals use PA (posterior-anterior) and lateral (side) x-ray images to detect diseases such as lung cancer at early stages, which can be quite difficult. Typically, such software focuses only on PA x-ray images and uses image-processing and soft-computation techniques to identify potentially diseased areas. There's been little focus on extracting knowledge from the x-rays and using knowledge of human anatomy to generate 3D reconstructions. Such reconstructions could help the detection process by providing a different way of visualizing the x-ray data to better investigate hard-to-diagnose regions.