Multi-layer radiation detector assembly
First Claim
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1. A radiation detector comprising:
- a charge integrating photodetector layer;
a photon counting photodetector layer disposed beneath the charge integrating photodetector layer; and
a scintillator disposed on a side of the charge integrating photodetector layer opposite to the photon counting photodetector layer and configured to receive radiation and to convert the radiation to lower energy photons suitable for detection by the charge integrating photodetector layer and the photon counting photodetector layer,wherein the charge integrating photodetector layer is substantially disposed over inactive areas or around the photon counting photodetector layer, and not over at least a portion of active areas of the photon counting photodetector layer.
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Abstract
A technique is provided for forming a multi-layer radiation detector. The technique includes a charge-integrating photodetector layer provided in conjunction with a photon-counting photodetector layer. In one embodiment, a plurality of photon-counting photosensor elements are disposed adjacent to a plurality of charge-integrating photosensor elements of the respective layers. Both sets of elements are connected to readout circuitry and a data acquisition system. The detector arrangement may be used for energy discriminating computed tomography imaging and similar computed tomography systems.
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25 Claims
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1. A radiation detector comprising:
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a charge integrating photodetector layer; a photon counting photodetector layer disposed beneath the charge integrating photodetector layer; and a scintillator disposed on a side of the charge integrating photodetector layer opposite to the photon counting photodetector layer and configured to receive radiation and to convert the radiation to lower energy photons suitable for detection by the charge integrating photodetector layer and the photon counting photodetector layer, wherein the charge integrating photodetector layer is substantially disposed over inactive areas or around the photon counting photodetector layer, and not over at least a portion of active areas of the photon counting photodetector layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification