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Systems and methods for classifying a substance

An imaging system and unknown substance technology, applied in the field of classification of substances, can solve the problems of time reduction and long re-scanning

Inactive Publication Date: 2008-07-16
通用电气保安公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at the second level, the entire package has to be rescanned, and the rescanning takes a long time and reduces the speed and efficiency of the package inspection system including the first and second levels

Method used

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  • Systems and methods for classifying a substance
  • Systems and methods for classifying a substance
  • Systems and methods for classifying a substance

Examples

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Embodiment Construction

[0018] FIG. 1 is an isometric view of an embodiment of a system 10 for sorting substances. System 10 includes gantry 12 . The gantry 12 includes a primary collimator 14 , a transmission detector 17 , a scatter detector 18 and a secondary collimator 76 . Scatter detectors are segmented semiconductor detectors.

[0019] Transmission detector 17 comprises a plurality of transmission detector cells or transmission detector elements, such as transmission detector elements 20 and 21 . The scatter detector 18 includes a plurality of scatter detector elements 22, 24, 26, 28, 30, 32, 34 and 36 for detecting coherent scatter. The scatter detector 18 includes any number of scatter detector elements, such as from and including 5 to 1200. For example, the scatter detector 18 includes a number such as from and including 5 to 40 scatter detector elements in the z-direction parallel to the z-axis, and includes a number such as from and including 1 to 30 scatter detector elements in the y-d...

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Abstract

A processor (190) configured to classify an unknown substance (82) based on simultaneously processing a plurality of parameters determined from a plurality of signals that are measured by at least one detector (17,18), wherein the at least one detector is located within a gantry (12) of an imaging system (10).

Description

technical field [0001] The present invention relates generally to imaging systems and more particularly to systems and methods for classifying substances. Background technique [0002] Typically, multiple pieces of luggage pass through two or more stages. The first level typically includes a transmission computed tomography (CT) system capable of handling a large number of baggage items inspected in one package. Materials contained in packages are usually identified by their attenuation coefficients. The attenuation coefficients are compared with the table and classified as hazardous or hazardous materials and non-hazardous materials. But the results of the first level may be ambiguous. Where materials classified as hazardous, dangerous, and non-hazardous have been found, judgments based on CT data are sometimes unreliable, and false alarms can be triggered where hazardous materials are not present. In the event that the package has raised an alarm, the package is passed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/00G03B42/02
CPCG01V5/0016G01V5/0025G01V5/222G01V5/22
Inventor G·哈丁
Owner 通用电气保安公司
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