X-ray or gamma ray systems or devices – Specific application – Absorption
Reexamination Certificate
2007-02-09
2009-10-20
Ho, Allen C. (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Absorption
C378S004000
Reexamination Certificate
active
07606348
ABSTRACT:
A method for operating an inspection system is disclosed in which an item under inspection may be moved between radiation sources and detectors illuminated by the sources. The radiation sources may be positioned such that radiation from at least some of the sources impinge on the radiation detectors, forming acute angles with respect to a plane having a normal direction coinciding with the first direction that are substantially in excess of three degrees. Data accumulated by the radiation detectors may be processed to form a three-dimensional tomographic data image of at least a portion of the item under inspection. The processing may be performed using an algebraic reconstruction technique using an inverse system matrix. The inverse matrix can be derived without first computing a transpose of the system matrix.
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Eilbert Richard Franklin
Foland Andrew D.
Morje Prabhav
Oreper Boris
Rolshud Nikolay
Ho Allen C.
L-3 Communications Security and Detection Systems Inc.
Wolf Greenfield & Sacks P.C.
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