System for radiograhically inspecting a relatively stationary ob

Details System for radiograhically inspecting a relatively stationary ob System for radiograhically inspecting a relatively stationary ob

1988-10-24

1991-07-16

Fields, Carolyn E.

X-ray or gamma ray systems or devices

Beam control

Scanner

378 45, 378 62, 378 88, G21K 510

Patent

active

050330730

ABSTRACT:
An improved system for radiographically inspecting a relatively stationary object and a related method are disclosed. A source transmits radiation toward a selected location at which the object is positioned. Radiation interactive with the object is thereafter transmitted in one embodiment to a detection area having electronic detectors and another embodiment through an atomic element filter to the detection area. En route to the detectors area or the filter and detection area, radiation is first blocked by a scanning point selection means which sequentially selects only a pencil beam portion of the radiation to be transmitted to the detection area at any given time. The pencil beams sequentially selected sweep the entire detection area over a short time, enabling use of signals generated by the electronic detectors in obtaining an image of the object or for obtaining the identity and location of atomic elements constituting the object.

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patent: 4342914 (1982-08-01), Bjorkholm
patent: 4352986 (1982-10-01), Pfeiler
patent: 4761802 (1988-08-01), Kiri
patent: 4773087 (1988-09-01), Plewes
patent: 4839913 (1989-06-01), Annis et al.

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