X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Patent
1997-08-26
1998-10-06
Porta, David P.
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
378 4, G01N 2300
Patent
active
058188975
ABSTRACT:
The disclosed detector system includes a two dimensional array of detectors for use in generating a volumetric scan of objects moving through a scanner. The array can comprise rows and columns of square detectors, or alternatively at least two types of detectors, one for providing high image resolution in a direction parallel to or within a plane containing the X- and Y-axes of a CT scanner, and the other for providing high image resolution e direction of the Z-axis of the scanner. Preferably, a first set of detectors is oriented in one direction and a second set of detectors is oriented in a different direction. The disclosed detector system may be used in connection with CT scanners and, in particular, with CT baggage scanners and is particularly useful for detecting the presence of thin objects such as sheet explosives within scanned baggage. An improved method of scanning baggage is provided by using the one set of detectors to generate CT image information and the other set of detectors to generate at least one sinogram.
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Analogic Corporation
Porta David P.
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