Backscatter shields and methods of shielding
AssigneeCarestream Health, Inc.
InventorPavlo Baturin
Life of this patent
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Abstract
A DR detector having a layer of imaging pixels and one or more shield layers behind the layer of imaging pixels. A first shield layer may have a thickness selected to be between about 1 mil and about 5 mils of a material selected from lead, tungsten, tin, copper, aluminum, and magnesium, selected according to an energy magnitude of radiographic energy received by the detector. A second shield layer may be positioned behind the first shield layer. The second shield layer may have a similar or different thickness selected according to an energy magnitude of radiographic energy received by the detector. The first shield layer may be positioned directly behind the layer of imaging pixels and the second shield layer may be positioned at an interior surface of the back of the detector housing.
Claims19
A DR detector comprising:
- a layer of imaging pixels;
- a first shield layer behind the layer of imaging pixels, relative to an x-ray source, the first shield layer having a thickness selected according to an energy magnitude of x-ray radiation to be received by the detector to minimize scattered x-ray radiation therewithin;
- a second shield layer behind the first shield layer;
- and
- a third shield layer between the first shield layer and the second shield layer,
- wherein the third shield layer comprises copper and tin formed as distinct abutting sublayers.
A DR detector comprising:
- a layer of imaging pixels;
- a first shield layer behind the layer of imaging pixels, relative to an x-ray source, the first shield layer having a thickness selected according to an energy magnitude of x-ray radiation to be received by the detector to minimize scattered x-ray radiation therewithin;
- a second shield layer behind the first shield layer;
- and
- a third shield layer between the first shield layer and the second shield layer
- wherein the third shield layer comprises copper and tin formed as an alloy.
A DR detector comprising:
- a layer of imaging pixels;
- a first shield layer behind the layer of imaging pixels, relative to an x-ray source, the first shield layer having a thickness selected according to an energy magnitude of x-ray radiation to be received by the detector to minimize scattered x-ray radiation therewithin;
- a second shield layer behind the first shield layer;
- and
- a third shield layer comprising copper and tin.
Dependencies are inferred from the claim text.