Patent · US Expired

Exposure control in an x-ray image detector

US6760405B2 · kind B2 · utility

19Cited by

5References

15Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Walter Ruetten · Linnich, DE
Michael Overdick · Eschweiler, DE
Falko Busse · Aachen, DE
Anthony Franklin · East Grinstead, GB
Martin J. Powell · Horley, GB

Key dates

Filing date	May 20, 2002
Grant date	Jul 6, 2004
Priority date	—
Expiry date	Jun 19, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH04N23/30
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An x-ray detector apparatus comprises an array of detector pixels (20), each pixel (20) comprising a conversion element (26, 260) for converting incident radiation into a charge flow, a charge storage element (28) and a switching device (29) enabling the charge stored to be provided to an output of the pixel (20). A plurality of dose sensing pixels further comprise a dose sensing element (40, 50) during x-ray exposure results in a change in the charge stored on the charge storage element (28) and also results in a dose sensing signal being generated which can be read out from the pixel (20). The dose sensing pixels enable a dose signal to be obtained without reading the charges stored on the pixel charge storage elements, so that dose sensing can be carried out during exposure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.