(under subclass 21) Subject matter including the production of a set of radiographs which, when superimposed in a stack for viewing with the radiographs aligned so that the images of a given point in the object all coincide, all other points or object details in the same plane will be revealed in an unobstructed view and images of all points lying in other planes, even closely adjacent planes, will be obscured or blurred out.
(1) Note. Other specific planes may be selectively viewed by appropriate positioning of the radiographs within the stack.
(2) Note. Dynamic tomography typically utilizes a planar tomos:graphic movement achieved with the effective pivot point of the linkage being disposed in a plane through the object with separate images being recorded for each of multiple exposures which are made at different angles through the object, i.e., a different film or other recording medium is used for each exposure to produce the set of radiographs.
(3) Note. Dynamic tomography is also referenced in the art as plane slipping tomography, plane slipping laminography, variable depth laminography, simultaneous multiple
