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Data collection, processing and storage systems for X-ray tomographic images

  • US 8,958,526 B2
  • Filed: 02/10/2012
  • Issued: 02/17/2015
  • Est. Priority Date: 12/16/2005
  • Status: Active Grant
First Claim
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1. A X-ray scanning system for scanning an object having a processing system, wherein said processing system comprises:

  • a multi-focus X-ray source arranged to generate X-rays from more than two X-ray source positions located around a scanning region, each of said X-ray source positions comprising grid wires, wherein said multi-focus X-ray source does not move during a scan;

    a control unit to control an electrical potential applied to said grid wires of each of said X-ray source positions to cause an emission of X-rays from each of said X-ray source positions;

    a first set of detectors arranged to detect X-rays transmitted through the scanning region;

    a second set of detectors arranged to detect X-rays scattered within the scanning region;

    processors adapted to receive X-ray tomographic image data, identify separate regions in the image, and extract a plurality of parameters from said data, wherein said parameters include at least one of constant grey level or texture and wherein identifying separate regions comprises calculating a mean intensity of a set of pixels within said image, determining a standard deviation of intensities of said set of pixels, determining an intensity of a pixel proximate to said set of pixels, and adding said pixel to the set of pixels to form a region if the intensity of said pixel is within said standard deviation;

    processors for executing a plurality of decision trees, wherein said processors for executing a plurality of decision trees receive said parameters and construct information using said parameters; and

    processors for conducting a database search, wherein said database search maps the information to a level of threat and allocates the object being scanned to a safety category.

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