X-ray scanner with partial energy discriminating detector array
First Claim
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1. A system for screening an object, comprising:
- a conveyor to move the object through an inspection region;
a first X-ray source configured to transmit X rays through the object for generating a vertical X-ray projection view of the object;
a second X-ray source configured to transmit for X rays through the object for generating a horizontal X-ray projection view of the object, wherein the vertical X-ray projection view and horizontal X-ray projection view spatially overlap and define the inspection region;
a first array of detectors, wherein the first array of detectors comprises a first set of dual-energy sensitive detectors and a first set of energy discriminating detectors positioned adjacent, not behind, each other relative to the first X-ray source; and
a second array of detectors, wherein the second array of detectors comprises a second set of dual-energy sensitive detectors and a second set of energy discriminating detectors positioned adjacent, not behind, each other relative to the first X-ray source and wherein the second array of detectors are positioned substantially perpendicular to the first array of detectors within the inspection region.
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Abstract
The present specification describes a scanning/inspection system configured as a dual-view system using dual-energy sensitive stacked detectors that are partially populated with multi-energy discriminating detectors for overall enhanced energy resolution and therefore improved discrimination of materials through better estimation of material physical properties such as density and effective atomic number.
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Citations
12 Claims
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1. A system for screening an object, comprising:
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a conveyor to move the object through an inspection region; a first X-ray source configured to transmit X rays through the object for generating a vertical X-ray projection view of the object; a second X-ray source configured to transmit for X rays through the object for generating a horizontal X-ray projection view of the object, wherein the vertical X-ray projection view and horizontal X-ray projection view spatially overlap and define the inspection region; a first array of detectors, wherein the first array of detectors comprises a first set of dual-energy sensitive detectors and a first set of energy discriminating detectors positioned adjacent, not behind, each other relative to the first X-ray source; and a second array of detectors, wherein the second array of detectors comprises a second set of dual-energy sensitive detectors and a second set of energy discriminating detectors positioned adjacent, not behind, each other relative to the first X-ray source and wherein the second array of detectors are positioned substantially perpendicular to the first array of detectors within the inspection region. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for screening an objects, comprising:
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moving the object through an inspection region using a conveyor; generating a vertical X-ray projection view of the object using a first X-ray source; generating a horizontal X-ray projection view of the object using a second X-ray source, wherein the vertical X-ray projection view and horizontal X-ray projection view spatially overlap and define the inspection region; detecting X-rays transmitted through the said object using a first array of detectors and a second array of detectors, wherein the first array of detectors comprises a first set of dual-energy sensitive detectors and a first set of energy discriminating detectors positioned adjacent, not behind, each other relative to the first X-ray source and wherein the second array of detectors comprises a second set of dual-energy sensitive detectors and a second set of energy discriminating detectors positioned adjacent, not behind, each other relative to the first X-ray source and wherein the second array of detectors are positioned substantially perpendicular to the first array of detectors within the inspection region. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification