Arrangement for examining a body comprising a radiation source
First Claim
1. A radiation arrangement for examining a body comprising:
- (a) radiation source means for producing a primary radiation beam having a pencil beam cross-section,(b) displacement means for producing a relative displacement between a body to be examined and said primary radiation beam,(c) detection means for detecting radiation elastically scattered at small scattering angles by said body from said primary radiation beam, wherein said small scattering angles are approximately equal to the sine of said scattering angle, and(d) diaphragm means constituting a plurality of lamella disposed between said body and said detection means for directing scattered radiation at said small scattering angles from different sections of said primary radiation beam in said body to different measuring strips on a measuring surface of said detection means, said detection means having a lateral resolution in a longitudinal direction of said measuring strips, such that said detection means is position sensitive along each of said plurality of lamella,wherein said detection means includes a plurality of parallel detectors, said plurality of detectors being disposed adjacent an area of said primary radiation beam, and said detectors detecting each time said scattered radiation passing through adjacent lamellas, said small scattering angle being determined by the striking point of said scattered radiation on said detectors, and wherein reciprocating diaphragm means are disposed between said radiation source means and said body for producing said primary radiation beam in a reciprocating movement in a plane parallel to said detection means.
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Accused Products
Abstract
The invention relates to an arrangement for examining a body comprising a radiation source for producing a primary beam of small cross-section, means for producing a relative displacement between the body on the one hand and the primary beam on the other hand, a detector device sensing the radiation elastically scattered at small scattering angles and means for determining the scattering angle and or the momentum. In an embodiment, a spatial resolution in the direction of the primary beam can be obtained in that several diaphragm lamellae are arranged between the body and the detector device in such a manner that scattered radiation from different sections of the primary beam each time strikes different strips on the surface of the detector device and in that the detector has a lateral resolution in the longitudinal direction of the strips. In another embodiment, a gamma camera is employed as the detector device.
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Citations
12 Claims
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1. A radiation arrangement for examining a body comprising:
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(a) radiation source means for producing a primary radiation beam having a pencil beam cross-section, (b) displacement means for producing a relative displacement between a body to be examined and said primary radiation beam, (c) detection means for detecting radiation elastically scattered at small scattering angles by said body from said primary radiation beam, wherein said small scattering angles are approximately equal to the sine of said scattering angle, and (d) diaphragm means constituting a plurality of lamella disposed between said body and said detection means for directing scattered radiation at said small scattering angles from different sections of said primary radiation beam in said body to different measuring strips on a measuring surface of said detection means, said detection means having a lateral resolution in a longitudinal direction of said measuring strips, such that said detection means is position sensitive along each of said plurality of lamella, wherein said detection means includes a plurality of parallel detectors, said plurality of detectors being disposed adjacent an area of said primary radiation beam, and said detectors detecting each time said scattered radiation passing through adjacent lamellas, said small scattering angle being determined by the striking point of said scattered radiation on said detectors, and wherein reciprocating diaphragm means are disposed between said radiation source means and said body for producing said primary radiation beam in a reciprocating movement in a plane parallel to said detection means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A radiation arrangement, for examining a body comprising:
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(a) radiation source means for producing a primary radiation beam having a pencil beam cross-section, (b) displacement means for producing a relative displacement between a body to be examined and said primary radiation beam, (c) detection means for detecting radiation elastically scattered at small scattering angles by said body from said primary radiation beam, wherein said small scattering angles are approximately equal to the sine of said scattering angle, and (d) diaphragm means constituting a plurality of lamella disposed between said body and said detection means for directing scattered radiation at said small scattering angles from different sections of said primary radiation beam in said body to different measuring strips on a measuring surface of said detection means, said detection means having a lateral resolution in a longitudinal direction of said measuring strips, such that said detection means is position sensitive along each of said plurality of lamella, wherein said detection means includes a gamma camera arranged outside of said primary radiation beam, said gamma camera being aligned with respect to said primary radiation beam so that a normal to an entrance surface of said gamma camera intersects said primary radiation beam at an angle different from zero. - View Dependent Claims (12)
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Specification