The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 2007
Filed:
Jul. 29, 2004
Shoichi Okamura, Nara-ken, JP;
Keiichi Fujii, Kyoto-fu, JP;
Susumu Adachi, Osaka-fu, JP;
Shinya Hirasawa, Kyoto-fu, JP;
Toshinori Yoshimuta, Osaka-fu, JP;
Koichi Tanabe, Kyoto-fu, JP;
Shigeya Asai, Kyoto-fu, JP;
Akihiro Nishimura, Kyoto-fu, JP;
Shoichi Okamura, Nara-ken, JP;
Keiichi Fujii, Kyoto-fu, JP;
Susumu Adachi, Osaka-fu, JP;
Shinya Hirasawa, Kyoto-fu, JP;
Toshinori Yoshimuta, Osaka-fu, JP;
Koichi Tanabe, Kyoto-fu, JP;
Shigeya Asai, Kyoto-fu, JP;
Akihiro Nishimura, Kyoto-fu, JP;
Shimadzu Corporation, Kyoto-fu, JP;
Abstract
A radiographic apparatus removes lag-behind parts from radiation detection signals taken from an FPD as X rays are emitted from an X-ray tube, on an assumption that the lag-behind part included in each X-ray detection signal is due to an impulse response formed of a plurality of exponential functions with different attenuation time constants. When a single attenuation time constant and intensity are provisionally set, checking is made whether an attenuation to a noise level of X-ray detection signals occurs in an X-ray non-emission state following an X-ray emission state. When the set attenuation time constant and intensity are found appropriate (OK), the impulse response having the single exponential function is determined valid. Corrected radiation detection signals are obtained by removing the lag-behind parts using the impulse response determined.