X-ray diffraction device, object imaging system, and method for operating a security system
First Claim
1. An x-ray diffraction imaging device, comprising:
- at least one x-ray detector; and
at least one scatter collimator positioned upstream of said at least one x-ray detector, said at least one scatter collimator comprising a plurality of successive plates, each successive plate of said plurality of successive plates defining a plurality of rectangular holes, each rectangular hole of the plurality of rectangular holes includes a first dimension and a substantially orthogonal second dimension that does not equal the first dimension, wherein the first dimension increases and the second dimension is substantially constant with said each successive plate in a direction towards said at least one x-ray detector, said plurality of successive plates arranged such that the plurality of rectangular holes define a plurality of widening quadrilateral passages extending through said at least one scatter collimator, wherein each of the plurality of widening quadrilateral passages is configured to increase a rate of detection of first x-rays that define an x-ray transit path enclosed within a single such widening quadrilateral passage, and the plurality of widening quadrilateral passages is configured to decrease a rate of detection of second x-rays that define an x-ray transit path that intersects more than one such widening quadrilateral passage.
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Accused Products
Abstract
An x-ray diffraction imaging device includes at least one x-ray detector and at least one scatter collimator positioned upstream of the at least one x-ray detector. The at least one collimator includes a plurality of successive plates. Each of the plurality of plates defines a plurality of rectangular holes. The plurality of successive plates are arranged such that the plurality of rectangular holes define a plurality of quadrilateral passages extending through the at least one scatter collimator. Each of the plurality of quadrilateral passages is configured to increase a rate of detection of first x-rays that define an x-ray transit path enclosed within a single such quadrilateral passage. Also, the plurality of quadrilateral passages is configured to decrease a rate of detection of second x-rays that define an x-ray transit path that intersects more than one such quadrilateral passage.
16 Citations
20 Claims
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1. An x-ray diffraction imaging device, comprising:
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at least one x-ray detector; and at least one scatter collimator positioned upstream of said at least one x-ray detector, said at least one scatter collimator comprising a plurality of successive plates, each successive plate of said plurality of successive plates defining a plurality of rectangular holes, each rectangular hole of the plurality of rectangular holes includes a first dimension and a substantially orthogonal second dimension that does not equal the first dimension, wherein the first dimension increases and the second dimension is substantially constant with said each successive plate in a direction towards said at least one x-ray detector, said plurality of successive plates arranged such that the plurality of rectangular holes define a plurality of widening quadrilateral passages extending through said at least one scatter collimator, wherein each of the plurality of widening quadrilateral passages is configured to increase a rate of detection of first x-rays that define an x-ray transit path enclosed within a single such widening quadrilateral passage, and the plurality of widening quadrilateral passages is configured to decrease a rate of detection of second x-rays that define an x-ray transit path that intersects more than one such widening quadrilateral passage. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An object imaging system, comprising:
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at least one computer processor; and an x-ray diffraction imaging device coupled to said at least one computer processor, said x-ray diffraction imaging device comprising; at least one x-ray detector; and at least one scatter collimator positioned upstream of said at least one x-ray detector, said at least one scatter collimator comprising a plurality of successive plates, each successive plate of said plurality of successive plates defining a plurality of rectangular holes, each rectangular hole of the plurality of rectangular holes includes a first dimension and a substantially orthogonal second dimension that does not equal the first dimension, wherein the first dimension increases and the second dimension is substantially constant with said each successive plate in a direction towards said at least one x-ray detector, said plurality of successive plates arranged such that the plurality of rectangular holes define a plurality of widening quadrilateral passages extending through said at least one scatter collimator, wherein each of the plurality of widening quadrilateral passages is configured to increase a rate of detection of first x-rays that define an x-ray transit path enclosed within a single such widening quadrilateral passage, and the plurality of widening quadrilateral passages is configured to decrease a rate of detection of second x-rays that define an x-ray transit path that intersects more than one such widening quadrilateral passage. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method for operating a security system, said method comprising:
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directing an x-ray fan-beam from a substantially stationary x-ray source toward a substantially stationary x-ray detector with at least one object positioned therebetween; scattering at least a portion of the x-ray fan-beam within at least a portion of the at least one object, thereby forming an x-ray scatter beam; and transmitting at least a portion of the x-ray scatter beam through a plurality of widening quadrilateral passages positioned upstream of the x-ray detector, wherein the plurality of widening quadrilateral passages are at least partially defined via a plurality of successive plates, each successive plate of the plurality of successive plates defines a plurality of rectangular holes, each rectangular hole of the plurality of rectangular holes includes a first dimension and a substantially orthogonal second dimension that does not equal the first dimension, wherein the first dimension increases and the second dimension is substantially constant with each successive plate in a direction towards the at least one x-ray detector, wherein each of the plurality of widening quadrilateral passages is configured to increase a rate of detection of first x-rays that define an x-ray transit path enclosed within a single such widening quadrilateral passage, and the plurality of widening quadrilateral passages is configured to decrease a rate of detection of second x-rays that define an x-ray transit path that intersects more than one such widening quadrilateral passage. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification