PET scanner with structured optical element
AssigneePhotoDetection Systems, Inc.
InventorsLeonid Romanov, Paul Domigan, Olof Johnson
Life of this patent
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Abstract
A PET scanner includes a scintillator block and a plurality of photodetectors, each of which has a field of view that includes a portion of the scintillator block. An optical element is disposed between the scintillator block and the plurality of photodetectors. The optical element has a first layer and a second layer. The first layer has a central region and a peripheral region separated by a first gap. The second layer has at least a first region and a second region separated by a second gap.
Claims60
A PET scanner comprising:
- a scintillator block;
- a plurality of photodetectors;
- an optical element disposed between the scintillator block and the plurality of photodetectors, the optical element having:
- a first layer that includes a central region having an outer wall and a peripheral region having an inner wall, the inner and outer wall being separated by a first gap;
- and
- a second layer in optical communication with the first layer, the second layer including at least a first region and a second region, the first region having a first interior wall and the second region having a second interior wall opposite the first interior wall, the first and second interior walls being separated by a second gap.
An optical element for directing light from a scintillator block to a plurality of photodetectors, the optical element comprising:
- a first layer in optical communication with the scintillator block, the first layer having a central region having an outer wall and a peripheral region having an inner wall, the inner and outer wall being separated by a first gap;
- and
- a second layer in optical communication with the plurality of photodetectors and with the first layer, the second layerincluding at least a first region and a second region, the first region having a first interior wall and the second region having a second interior wall opposite the first interior wall, the first and second interior walls being separated by a second gap.
A PET scanner comprising:
- a scintillator block for generating a spatial light distribution of scintillation photons in response to illumination by a gamma ray photon;
- means for an outer and inner the spatial light distribution of scintillation photons to generate a modified spatial light distribution;
- and
- a plurality of photodetectors for receiving the modified spatial light distribution from the outer and inner means.
An optical element for directing light from a scintillator block to a plurality of photodetectors, the optical element comprising:
- a structured outer layer in optical communication with the scintillator block;
- and
- a structured inner layer in optical communication with the plurality of photodetectors.
Dependencies are inferred from the claim text.