A system, method, and article of manufacture for imaging tubular structures of the human body, such as the digestive tract of a living person, with a medical imaging device such as a computed tomography (CT) scanner and a computer workstation. The CT scanner is used to generate cross-sectional axial...http://www.google.com.au/patents/US5891030?utm_source=gb-gplus-sharePatent US5891030 - System for two dimensional and three dimensional imaging of tubular structures in the human body
