A three-dimensional image of an object scanned with a plurality of cone-beam projections from a number of source positions is reconstructed using a method wherein intermediate transform functions are obtained from two-dimensional images of radiation attenuation in the scanned object. The intermediate...http://www.google.com.au/patents/US20030202637?utm_source=gb-gplus-sharePatent US20030202637 - True 3D cone-beam imaging method and apparatus
