X-ray detector with photo-gates and dose control

Details X-ray detector with photo-gates and dose control X-ray detector with photo-gates and dose control

2005-02-01

2008-03-18

Thomas, Courtney (Department: 2882)

X-ray or gamma ray systems or devices

Electronic circuit

With display or signaling

C378S097000

Reexamination Certificate

active

07346146

ABSTRACT:
The invention relates to a radiation detector apparatus (10) with an array (12) of detector pixels. Each pixel (20) of the detector comprises a photogate electrode (21) under which electrical charges produced by incident radiation (v, X) are collected. The change of these charges gives rise to displacement currents in photogate lines (32) connected to the photogate electrodes (21) which may be monitored by current sensors (40). Thus the charges collected by all photogate electrodes (21) connected to a photogate line (32) can be measured during an ongoing exposure, allowing for advanced dose control methods of the illumination.

REFERENCES:
patent: 5055667 (1991-10-01), Sayag
patent: 5937027 (1999-08-01), Thevenin et al.
patent: 6326230 (2001-12-01), Pain et al.
patent: 6404851 (2002-06-01), Possin et al.
patent: 6555842 (2003-04-01), Fossum et al.
patent: 2002/0181648 (2002-12-01), Ruetten et al.
patent: WO200225314 (2002-03-01), None

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