Title: X-ray detector with photogates and dose control
Application Number: 200580004571 Application Date: 2005.02.01
Publication Number: 1918483 Publication Date: 2007.02.21
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01T1/208;H01L27/146
Applicant(s) Name: Philips Intellectual Property Address:
Inventor(s) Name: Ruetten Walter;Overdick Michael
Attorney & Agent: cheng tianzheng chen jingjun
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 connected to a photogate line (32) can be measured during an ongoing exposure, allowing for advanced dose control methods of the illumination.
Time: 6