Radiation detector, in particular X-ray radiation detector
AssigneeSiemens Aktiengesellschaft
InventorsPhilipp Bernhardt, Martin Spahn
Life of this patent
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Abstract
A radiation detector, in particular an X-ray radiation detector, in the form of a flat-panel detector, may comprise a scintillator layer applied to a substrate and comprising elongated needles made from a scintillator material forming the scintillator layer, and an actively readable pixel array composed of photodiodes, wherein the thickness of the scintillator layer may be in the range of 900 μm-2500 μm, and wherein the angle at which the needles stand relative to the pixel array, starting from 90° in the center of the detector, may decrease with increasing distance from the center of the detector.
Claims15
A flat-panel X-ray radiation detector, comprising:
- a scintillator layer applied to a substrate and comprising elongated needles made from a scintillator material forming the scintillator layer, and
- an actively readable pixel array comprising photodiodes,
- wherein the thickness of the scintillator layer is in the range of 900 μm 2500 μm,
- wherein each elongated needle forms an angle with respect to a plane of the pixel array,
- wherein the respective angle for different needles decreases with increasing distance from a center of the detector,
- wherein the substrate comprises a pre-formed non-planar surface on which the scintillator layer is formed, the pre-formed non-planar substrate surface defining a plurality of substrate surface sections forming a plurality of different angles with respect to the plane of the pixel array,
- wherein each needle extends from one of the substrate surface sections, and
- wherein the angle of each needle with respect to the plane of the pixel array is defined by the angle of the substrate surface section from which it extends.
A structure for use in an X-ray radiation detector comprising:
- a substrate comprises a pre-formed non-planar surface defining a plurality of substrate surface sections forming a plurality of different predefined angles with respect to a reference plane,
- an array of elongated needles made from a scintillator material and formed on the substrate, wherein each needle extends from one of the substrate surface sections
- wherein the thickness of the scintillator layer is in the range of 900 μm-2500 μm, and
- wherein the angle at which the needles stand relative to the reference plane, starting from 90° in the center of the detector, decreases with increasing distance from the center of the detector,
- wherein the angle of each needle with respect to the reference plane is defined by the predefined angle of the substrate surface section from which it extends.
Dependencies are inferred from the claim text.