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Coded aperture imaging

  • US 5,930,314 A
  • Filed: 05/30/1997
  • Issued: 07/27/1999
  • Est. Priority Date: 05/31/1996
  • Status: Expired due to Term
First Claim
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1. An apparatus for analyzing radiation emitted by an object in response to neutron bombardment, the apparatus comprisinga radiation detector array for detecting the energy of gamma rays emitted by the object in response to neutron bombardment and for producing detection signals responsive to the energy of the detected gamma rays,the neutrons having interacted with atomic nuclei of the elements contained within the object to produce gamma-rays characteristic of the elements contained within the object;

  • a coded aperture, having a predetermined configuration, disposed between the detector array and the object such that emitted radiation is detected by the detector array after passage through the coded aperture; and

    a data processor for characterizing the object by substantially determining the elemental composition of the object,the elemental composition being indicated by the location, number and energy spectra of the gamma ray sources located within the object,the location, number and energy spectra of gamma ray sources being substantially determined by the data processor based upon the detection signals produced by the detector array, and the selected configuration of the coded aperture.

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