A method of reconstructing a computed tomographic image comprising projecting X-rays through material to be tested at a plurality of spaced positions, and measuring the X-ray density values of the X-rays projected through the material along the distribution of projected X-rays. The spaced positions at...http://www.google.com.au/patents/US4418387?utm_source=gb-gplus-sharePatent US4418387 - Method of reconstructing a computed tomographic image from a single X-ray projection
