XRD-based false alarm resolution in megavoltage computed tomography systems
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United States of America Patent
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Nov 30, 2010
Grant Date -
Dec 31, 2009
app pub date -
Feb 6, 2009
filing date -
Feb 22, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
System and method for XRD-based false alarm resolution in computed tomography (“CT”) threat detection systems. Following a scan of an object with a megavoltage CT-based threat detection system, a suspicious area in the object is identified. The three dimensional position of the suspicious area is used to determine a ray path for the XRD-based threat detection system that provides minimal X-ray attenuation. The object is then positioned for XRD scanning of the suspicious area along this determined ray path. The XRD-based threat detection system is configured to detect high density metals (“HDMs) as well as shielded Special Nuclear Materials (“SNMs”) based on cubic or non-cubic diffraction profiles.
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