X-ray scanner

US4756015A · kind A · utility

Assignee

• Heimann GmbH · DE

Inventors

• Gerhard Doenges · Nastätten, DE
• Cornelius Koch · Hochheim, DE

Key dates

• Filing date: Jun 4, 1987
• Grant date: Jul 5, 1988
• Expiry date: Jun 4, 2007

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N23/04
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An x-ray scanner generates a fan-shaped x-ray beam through which an object to be inspected is moved and a detector line which generates signals corresponding to the radiation attenuated by the object. The processing electronics includes a comparator for recognizing faulty detector signals by means of which the roll-in of data ito the image memory is controllable such that, given a faulty detector signal, the transfer of the information into a memory line allocated to the detector is inhibited. The x-ray scanner also includes an allocator unit which omits predetermined detector channels for the purpose of geometric balancing. Given outage of a detector, its detector channel is omitted by the allocator unit, based on a signal from the comparator, instead of a prescribed detector channel.