Tomodensitometry image acquisition and reconstruction process and a tomodensitometer using this process

摘要

An image acquisition and reconstruction process for increasing the definition of the radiological image obtained by tomodensitometry. The invention consists in taking two series of data or "views" and in arranging this data by causing the views Wi of the second series to undergo a translation of - pi theta and a symmetry - gamma , in the space [ theta , gamma ], theta being equal to beta + gamma ; gamma designates the angle between the different detectors and the straightline joining the origin of the fan-shaped X ray beam to the center of rotation of the source-detectors assembly and beta represents the different angles of the source-detectors assembly at which acquisition of the views is made.