X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Reexamination Certificate
2007-08-21
2007-08-21
Glick, Edward J. (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
C378S098800
Reexamination Certificate
active
11519876
ABSTRACT:
An X-ray sensor signal processing circuit and method used in an industrial X-ray CT apparatus for processing an output signal of a semiconductor X-ray sensor which detects a pulsed X-ray emitted from an accelerator and passed through an object to be inspected. The circuit includes a first resistor having one terminal connected to the X-ray sensor and an other terminal connected to ground, a first capacitor having one end terminal connected to a connection point of the X-ray sensor and the first resistor, an operational amplifier having an inverting input connected to an other terminal of the first capacitor, and an integrator having a second resistor and a second capacitor each connected to the operational amplifier in parallel. The circuit is configured so that at least bias conditions of the X-ray sensor and the first capacitor are returned to a steady state after irradiation of the pulsed X-ray.
REFERENCES:
patent: 4748649 (1988-05-01), Griesmer et al.
patent: 4884289 (1989-11-01), Clockmann
patent: 5043582 (1991-08-01), Cox et al.
patent: 5578825 (1996-11-01), Cho et al.
patent: 5661293 (1997-08-01), Ziegler et al.
patent: 5801385 (1998-09-01), Endo et al.
patent: 5869837 (1999-02-01), Huang
patent: 5949842 (1999-09-01), Schafer et al.
patent: 6183561 (2001-02-01), Belotserkovsky
patent: 6366636 (2002-04-01), Kamimura
patent: 6744848 (2004-06-01), Stanton et al.
patent: 2004/0223582 (2004-11-01), Kamimura
patent: 2004/0234024 (2004-11-01), Kamimura
patent: 0 026 108 (1981-04-01), None
patent: 58-15747 (1983-01-01), None
patent: 2000-298106 (2000-10-01), None
1996 IEEE Nuclear Science Symposium, Conference Record, vol. 2, pp. 816-820, Nov. 2-9, 1996, Anaheim, CA, USA.
Computer Image Processing, Version for Application and Practice, vol. 1, H. Tamura, Souken publication, pp. 18-29, 1990.
Izumi Shigeru
Kamimura Hiroshi
Kitaguchi Hiroshi
Kuwabara Kouji
Numata Shouhei
Antonelli, Terry Stout & Kraus, LLP.
Glick Edward J.
Hitachi , Ltd.
Kao Chih-Cheng Glen
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