SCINTILLATOR ARRAYS FOR RADIATION DETECTORS AND METHODS OF MANUFACTURE
First Claim
1. A pixilated scintillator array for a radiation detector of an imaging system, said scintillator array comprising:
- a plurality of scintillator pixels arranged side by side in an array, said scintillator pixels separated from adjacent scintillator pixels by gaps, each said scintillator pixel comprising;
a top surface and a plurality of side surfaces;
a first layer covering said top surface and said side surface of each said scintillator pixel, said first layer formed from a smoothing coating;
a second layer covering said first layer, said second layer formed from a reflective metal coating; and
a third layer covering said second layer, said third layer formed from a barrier coating.
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Abstract
A pixilated scintillator array for a radiation detector of an imaging system includes a plurality of scintillator pixels arranged side by side in an array. The scintillator pixels are separated from adjacent scintillator pixels by gaps. Each scintillator pixel includes a top surface, a plurality of side surfaces, and a first layer covering the top surface and the side surfaces of each scintillator pixel. The first layer is formed from a smoothing coating. A second layer formed from a reflective metal coating covers the first layer, and a third layer formed from a barrier coating covers the second layer.
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Citations
24 Claims
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1. A pixilated scintillator array for a radiation detector of an imaging system, said scintillator array comprising:
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a plurality of scintillator pixels arranged side by side in an array, said scintillator pixels separated from adjacent scintillator pixels by gaps, each said scintillator pixel comprising;
a top surface and a plurality of side surfaces;
a first layer covering said top surface and said side surface of each said scintillator pixel, said first layer formed from a smoothing coating;
a second layer covering said first layer, said second layer formed from a reflective metal coating; and
a third layer covering said second layer, said third layer formed from a barrier coating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A computed tomographic imaging system comprising:
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a rotating gantry;
a detector array on said rotating gantry; and
a radiation source on said rotating gantry opposite said detector array and configured to direct a radiation beam through an object towards said detector array;
said detector array comprising a scintillator array optically coupled to a plurality of diodes, said scintillator array comprising;
a plurality of scintillator pixels arranged side by side in an array, said scintillator pixels separated from adjacent scintillator pixels by gaps, each said scintillator pixel comprising;
a top surface and a plurality of side surfaces;
a first layer covering said top surface and said side surface of each said scintillator pixel, said first layer formed from a smoothing coating;
a second layer covering said first layer, said second layer formed from a reflective metal coating; and
a third layer covering said second layer, said third layer formed from a barrier coating. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method of making a scintillator array comprising:
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providing a pixilated scintillator pack preform comprising a plurality of scintillator pixels arranged side by side in an array and separated by a gap, each pixel having a top surface and a plurality of side surfaces;
applying a smoothing coating on the top surface and the side surface of each scintillator pixel to form a smoothing layer;
applying a reflective metal coating on top of the smoothing layer to form a reflective metal layer; and
applying a barrier coating on top of the reflective metal layer to form a barrier layer. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification