Patent ID: 7085344
Filing Date: 2006-08-01
Classification: G01N

Abstract:
1. Apparatus for measuring and recording a time-varying radiation absorption profile of an object undergoing a change causing a time variation in said radiation absorption profile of said object, said apparatus comprising: a continuous radiation emission source; a plurality of detectors, capable of detecting radiation produced by said source, said detectors being positioned behind said object being measured, relative to said source; a signal reversing switch, connected to said detectors; a plurality of signal integrators for each said detector, said integrators for each said detector being connected to their respective detector by said signal reversing switch, with portions of said plurality of said integrators being combined in banks of integrators, such that said signal reversing switch simultaneously connects said detectors with only said integrators of one of said banks of integrators; a control unit, connected with said signal reversing switch, for switching the signal reversing switch; a pulse generator, connected to an input of said control unit; and a synchronous signal transmitter, connected to an input of said control unit, for resetting said signal reversing switch to said integrators of a first said bank of said integrators.