Abstract: A generally non-invasive method of colon examination in which the patient's colon is first inflated with gas, and then a plurality of cross-sectional images of the colon are taken by CT scanning along the longitudinal axis of the abdomen. Sets of data corresponding to each cross-sectional image are stored in computer memory. These sets of data are processed by a first computer program that reconstructs a three-dimensional model of the entire colon. Data corresponding to the reconstructed three-dimensional model of the colon are also stored in computer memory. A second computer program processes the original sets of data and the three-dimensional model data to reconstruct, for successive thin segments along the length of the entire colon, a cross-sectional image for each segment which is perpendicular to the longitudinal axis of the colon lumen.

Abstract: This patent is directed to a system which uses NMR techniques for three dimensional imaging of living organisms and in which the static and gradient fields not be uniform. It incorporates an image data processing scheme that permits single static and gradient magnetic field sources to image two different objects or patients concurrently through the use of a data processing technique which sorts and routes imaging data from separate sets of sensing devices in response to two separate control and display means to provide control inputs for the common magnetic field sources while controlling data extraction from separate, independent image data receiving probe systems. Response of the two probe systems to the common magnetic field sources is achieved through non-uniform field analysis techniques of the data received through the individual probe systems.