Centroid apparatus and method for sub-pixel X-ray image...

Details Centroid apparatus and method for sub-pixel X-ray image... Centroid apparatus and method for sub-pixel X-ray image...

2005-01-25

2005-01-25

Church, Craig E. (Department: 2882)

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

C378S098800

Reexamination Certificate

active

06847042

ABSTRACT:
An apparatus for detecting X-rays comprises a scintillator which emits a plurality of photoelectrons upon being impacted by an X-ray photon. The photoelectrons are amplified in a gas electron multiplier and the resultant photoelectrons are accumulated on a two dimensional array of charge collection electrodes. Electrical signals are produced which indicate the quantity of photoelectrons which strike each charge collection electrode. A processor determines a location of the X-ray photon strike by analyzing the spatial distribution of the photoelectrons accumulated by the array of charge collection electrodes. The intensity of the X-ray photon is determined from the number of accumulated photoelectrons.

REFERENCES:
patent: 5192861 (1993-03-01), Breskin et al.
patent: 6011265 (2000-01-01), Sauli
patent: 6316773 (2001-11-01), Giakos
patent: 20010032934 (2001-10-01), Lee et al.

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