Method and apparatus for shadow aperture backscatter radiography (SABR) system and protocol
First Claim
1. A radiography system, comprising:
- at least one penetrating radiation source for providing a penetrating radiation field;
at least one partially transmissive radiation detector, wherein said partially transmissive radiation detector is interposed between an object region to be interrogated and the at least one penetrating radiation source, wherein the at least one partially transmissive radiation detector transmits a portion of the penetrating radiation field incident on the at least one partially transmissive radiation detector, anda shadow aperture comprising a plurality of radiation attenuating regions having at least one illumination aperture therebetween two or more of the plurality of radiation attenuating regions, wherein the shadow aperture is disposed between the at least one penetrating radiation source and the at least one partially transmissive detector, wherein the at least one illumination aperture allows the penetrating radiation field to reach the object region, wherein backscattered radiation from the object region is detected by the at least one partially transmissive radiation detector in shadowed regions of the at least one partially transmissive radiation detector that are shadowed by the radiation attenuating regions of the shadow aperture.
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Accused Products
Abstract
A shadow aperture backscatter radiography (SABR) system includes at least one penetrating radiation source for providing a penetrating radiation field, and at least one partially transmissive radiation detector, wherein the partially transmissive radiation detector is interposed between an object region to be interrogated and the radiation source. The partially transmissive radiation detector transmits a portion of the illumination radiation field. A shadow aperture having a plurality of radiation attenuating regions having apertures therebetween is disposed between the radiation source and the detector. The apertures provide illumination regions for the illumination radiation field to reach the object region, wherein backscattered radiation from the object is detected and generates an image by the detector in regions of the detector that are shadowed by the radiation attenuation regions.
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Citations
26 Claims
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1. A radiography system, comprising:
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at least one penetrating radiation source for providing a penetrating radiation field; at least one partially transmissive radiation detector, wherein said partially transmissive radiation detector is interposed between an object region to be interrogated and the at least one penetrating radiation source, wherein the at least one partially transmissive radiation detector transmits a portion of the penetrating radiation field incident on the at least one partially transmissive radiation detector, and a shadow aperture comprising a plurality of radiation attenuating regions having at least one illumination aperture therebetween two or more of the plurality of radiation attenuating regions, wherein the shadow aperture is disposed between the at least one penetrating radiation source and the at least one partially transmissive detector, wherein the at least one illumination aperture allows the penetrating radiation field to reach the object region, wherein backscattered radiation from the object region is detected by the at least one partially transmissive radiation detector in shadowed regions of the at least one partially transmissive radiation detector that are shadowed by the radiation attenuating regions of the shadow aperture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for radiography, comprising:
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positioning a shadow aperture between an object region to be interrogated and an at least one penetrating radiation source, wherein the shadow aperture comprises a plurality of radiation attenuating regions having at least one illumination aperture therebetween two or more of the plurality of radiation attenuating regions; positioning at least one partially transmissive radiation detector between the shadow aperture and the object region, wherein the at least one partially transmissive radiation detector transmits a portion of the penetrating radiation field incident on the at least one partially transmissive radiation detector; directing a penetrating radiation field from the at least one penetrating radiation source to the shadow aperture, wherein the at least one illumination aperture allows the penetrating radiation field to reach the object region; and detecting backscattered radiation from the object region via shadowed regions of the partially transmissive detector shadowed by the radiation attenuating regions. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification