Method and apparatus for radiation detection
First Claim
1. A positron emission tomography system for imaging a portion of a living organism, said portion treated with a radionuclide, said radionuclide emitting positrons, said emitted positrons creating photon pairs within said portion of said living organism, said system comprising:
- a plurality of detection system at least partially surrounding said portion of said living organism, wherein said plurality of detection systems are comprised of diametrically opposed detection system pairs, wherein each of said plurality of detection systems is comprised of a hodoscope, each of said hodoscopes comprised of a plurality of position sensitive detectors, wherein a portion of said photons undergo Compton scatters with said detection systems;
a multi-channel readout system coupled to said plurality of position sensitive detectors;
a processor coupled to said multi-channel readout system, said processor determining track directions and total energies for said portion of said photons; and
a monitor coupled to said processor, said monitor displaying an image of said portion of said living organism;
said plurality of detection systems further comprising a plurality of calorimeters, said calorimeters positioned proximate an end of portion of each of said hodoscopes.
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Abstract
An imaging system for imaging an object, the system comprising an x-ray source emitting x-rays, a detection system comprised of a hodoscope comprising a plurality of position sensitive and substantially parallel detector planes, a multi-channel readout system coupled to the hodoscope, a processor coupled to the multi-channel readout system, and a monitor coupled to said processor and displaying an image of said object. The object is located between said x-ray source and the hodoscope. A portion of said x-rays passing through said object passes into said hodoscope and is scattered within it.
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Citations
27 Claims
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1. A positron emission tomography system for imaging a portion of a living organism, said portion treated with a radionuclide, said radionuclide emitting positrons, said emitted positrons creating photon pairs within said portion of said living organism, said system comprising:
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a plurality of detection system at least partially surrounding said portion of said living organism, wherein said plurality of detection systems are comprised of diametrically opposed detection system pairs, wherein each of said plurality of detection systems is comprised of a hodoscope, each of said hodoscopes comprised of a plurality of position sensitive detectors, wherein a portion of said photons undergo Compton scatters with said detection systems;
a multi-channel readout system coupled to said plurality of position sensitive detectors;
a processor coupled to said multi-channel readout system, said processor determining track directions and total energies for said portion of said photons; and
a monitor coupled to said processor, said monitor displaying an image of said portion of said living organism;
said plurality of detection systems further comprising a plurality of calorimeters, said calorimeters positioned proximate an end of portion of each of said hodoscopes. - View Dependent Claims (2, 3)
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4. A positron emission tomography system for imaging a portion of a living organism, said portion treated with a radionuclide, said radionuclide emitting positrons, said emitted positrons creating photon pairs within said portion of said living organism, said system comprising:
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a plurality of detection systems at least partially surrounding said portion of said living organism, wherein said plurality of detection systems are comprised of diametrically opposed detection system pairs, wherein each of said plurality of detection systems is comprised of a hodoscope, each of said hodoscopes comprised of a plurality of position sensitive detectors, wherein a portion of said photons undergo Compton scatters within said detection systems;
a multi-channel readout system coupled to said plurality of position sensitive detectors;
a processor coupled to said multi-channel readout system, said processor determining track directions and total energies for said portion of said photons; and
a monitor coupled to said processor, said monitor displaying an image of said portion of said living organism;
further comprising passive septa interposed between said detection systems.
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5. A positron emission tomography system for imaging a portion of a living organism, said portion treated with a radionuclide, said radionuclide emitting positrons, said emitted positrons creating photon pairs within said portion of said living organism, said system comprising:
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a plurality of detection systems at least partially surrounding said portion of said living organism, wherein said plurality of detection systems are comprised of diametrically opposed detection system pairs, wherein each of said plurality of detection systems is comprised of a hodoscope, each of said hodoscopes comprised of a plurality of position sensitive detectors, wherein a portion of said photons undergo Compton scatters within said detection systems;
a multi-channel readout system coupled to said plurality of position sensitive detectors;
a processor coupled to said multi-channel readout system, said processor determining track directions and total energies for said portion of said photons; and
a monitor coupled to said processor, said monitor displaying an image of said portion of said living organism;
further comprising passive septa interposed between said detection systems, wherein said active septa are calorimeters.
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6. An imaging system for imaging an object, the system comprising:
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an x-ray source emitting x-rays;
a detection system comprised of a hodoscope and a calorimeter at least partially enclosing said hodoscope, wherein said object is located between said x-ray source and said hodoscope, said hodoscope comprised of a plurality of positron sensitive detector planes, wherein a portion of said x-rays passing through said object pass into said hodoscope and are scattered within said hodoscope;
a multi-channel readout system coupled to said plurality of positron sensitive detector planes;
a processor coupled to said multi-channel readout system; and
a monitor coupled to said processor, said monitor displaying an image of said object. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A radiation detector for detecting gamma rays, comprising:
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a detector aperture, said aperture limiting said detector to a predetermined field-of-view;
a detection system comprised of a hodoscope and a calorimeter at least partially enclosing said hodoscope, said hodoscope comprised of a plurality of position sensitive detector planes, wherein a portion of said gamma rays passes through said aperture into said hodoscope and is scattered within said hodoscope;
a multi-channel readout system coupled to said detection system;
a processor coupled to said multi-channel readout system; and
an output device coupled to said multi-channel readout system, said output device outputting information corresponding to said detected gamma rays. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification