High-Resolution Depth-of-Interaction PET Detector
First Claim
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1. A DOI-sensitive scintillation detector, comprising:
- a plurality of crystal elements of at least two different alternating crystal decay times arranged in a three-dimensional checkerboard arrangement, the crystal elements having different scintillation decay time characteristics with respect to adjacent elements in each of said three dimensions; and
one or more photosensors disposed on each of at least two orthogonal surfaces of the three-dimensional checkerboard arrangement.
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Abstract
A depth of interaction-sensitive crystal scintillation detector features crystal types that alternate in three-dimensional checkerboard fashion, each type having a different crystal decay time. One or more photosensors are disposed on each of at least two orthogonal surfaces. The scintillation detector provides improved depth of interaction resolution. The different crystal types are identified by pulse shape discrimination processing.
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Citations
9 Claims
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1. A DOI-sensitive scintillation detector, comprising:
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a plurality of crystal elements of at least two different alternating crystal decay times arranged in a three-dimensional checkerboard arrangement, the crystal elements having different scintillation decay time characteristics with respect to adjacent elements in each of said three dimensions; and one or more photosensors disposed on each of at least two orthogonal surfaces of the three-dimensional checkerboard arrangement. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A DOI-sensitive scintillation detector, comprising:
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a plurality of crystal elements of at least two different alternating crystal compositions arranged in a three-dimensional checkerboard arrangement, the different crystal compositions having different scintillation decay time characteristics with respect to adjacent elements in each of said three dimensions; and one or more photosensors disposed on each of at least two orthogonal surfaces of the three-dimensional checkerboard arrangement.
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9. A DOI-sensitive scintillation detector, comprising:
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a plurality of crystal elements of at least two different alternating crystal dopant levels arranged in a three-dimensional checkerboard arrangement, the different crystal dopant levels causing different scintillation decay time characteristics with respect to adjacent elements in each of said three dimensions; and one or more photosensors disposed on each of at least two orthogonal surfaces of the three-dimensional checkerboard arrangement.
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Specification