Dark current compensation
AssigneeKoninklijke Philips N.V.
InventorsRoger STEADMAN BOOKER, Ewald ROESSL
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Abstract
The present invention is directed towards a photon counting radiation detector (10) comprising an array of pixels (13) comprising a plurality of detection pixels (131) for detecting imaging information. At least one pixel of the array of pixels (132) is shielded from receiving radiation. A dark current is determined from the shielded pixel (132) and is used to compensate for dark current in the other, non-shielded pixels (131). Embodiments are directed to integrating pixel shielding within an Anti Scatter Grid or in a mask.
Claims16
A photon counting radiation detector comprising an array of pixels comprising a plurality of direct conversion detection pixels for detecting imaging information, wherein at least one pixel of the array of pixels is shielded from receiving radiation.
A spectral radiation detection method, comprising the step of:
- irradiating a photon counting radiation detector comprising an array of pixels comprising a plurality of detection pixels for detecting imaging information and at least one pixel that is shielded from incoming radiation.
Dependencies are inferred from the claim text.