Dual-energy scanning-based detection of ionizing radiation
First Claim
1. A dual-energy scanning-based radiation detecting apparatus comprising:
- a line detector;
a device for scanning said line detector across an object to be examined while said line detector is exposed to an ionizing radiation beam, which has impinged on said object, to thereby record a plurality of line images of said object;
a filter device arranged in the path of said ionizing radiation beam upstream of said object to filtrate said ionizing radiation beam, the filter device being capable of operating in two operation modes having different filter characteristics; and
a control device for altering operation mode of the filter device subsequent to at least every second of said line images being recorded.
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Accused Products
Abstract
A dual-energy scanning-based radiation detecting apparatus comprises a line detector; a device for scanning said line detector across an object while said line detector is exposed to an ionizing radiation beam, which has impinged on said object, to thereby record a plurality of line images of said object; a filter device arranged in the path of said ionizing radiation beam upstream of said object to filtrate said ionizing radiation beam, the filter device being capable of operating in two operation modes having different filter characteristics; and a control device for altering operation mode of the filter device subsequent to at least every second of said line images being recorded.
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Citations
17 Claims
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1. A dual-energy scanning-based radiation detecting apparatus comprising:
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a line detector;
a device for scanning said line detector across an object to be examined while said line detector is exposed to an ionizing radiation beam, which has impinged on said object, to thereby record a plurality of line images of said object;
a filter device arranged in the path of said ionizing radiation beam upstream of said object to filtrate said ionizing radiation beam, the filter device being capable of operating in two operation modes having different filter characteristics; and
a control device for altering operation mode of the filter device subsequent to at least every second of said line images being recorded. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A dual-energy scanning-based radiation detecting apparatus comprising:
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a plurality of stacked line detectors;
a device for scanning said plurality of stacked line detectors across an object to be examined while each of said plurality of stacked line detectors is exposed to an ionizing radiation beam, which has impinged on said object, to thereby record a plurality of line images of said object;
a filter device arranged in the path of said ionizing radiation beams upstream of said object to filtrate said ionizing radiation beams, the filter device comprising an array of filter sections aligned with said ionizing radiation beams during scanning so that each of said ionizing radiation beams will have been filtered by a respective one of said filter sections when impinging on said object, where every second filter section in the array has a first filter characteristic and the other filter sections in the array have each a second filter characteristic; and
said device for scanning said plurality of stacked line detector is arranged to scan at least a distance corresponding to two times the distance between two adjacent line detectors of said plurality of stacked line detectors. - View Dependent Claims (13, 14, 15)
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16. A dual-energy scanning-based radiation detecting method comprising the steps of:
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scanning a line detector across an object while said line detector is exposed to an ionizing radiation beam, which has impinged on an object to be examined, to thereby record a plurality of line images of said object;
arranging a filter device in the path of said ionizing radiation beam upstream of said object to filtrate said ionizing radiation beam, the filter device being capable of operating in two operation modes having different filter characteristics; and
altering operation mode of said filter device subsequent to at least every second of said line images being recorded.
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17. A dual-energy scanning-based radiation detecting method comprising the steps of:
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scanning a plurality of stacked line detectors across an object to be examined while each of said plurality of stacked line detectors is exposed to an ionizing radiation beam, which has impinged on said object, to thereby record a plurality of line images of said object;
arranging a filter device in the path of said ionizing radiation beams upstream of said object to filtrate said ionizing radiation beams, the filter device comprising an array of filter sections; and
having said filter sections aligned with said ionizing radiation beams during scanning so that each of said ionizing radiation beams will have been filtered by a respective one of said filter sections when impinging on said object, where every second filter section in the array has a first filter characteristic and the other filter sections in the array have each a second filter characteristic;
whereinsaid scanning said plurality of stacked line detector is performed at least a distance corresponding to two times the distance between two adjacent line detectors of said plurality of stacked line detectors.
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Specification