X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Reexamination Certificate
2006-05-02
2006-05-02
Qlick, Edward J. (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
C378S019000, C378S004000, C378S154000
Reexamination Certificate
active
07039151
ABSTRACT:
A radiation imaging device includes a radiation source which rotates around a subject to be examined and irradiates the subject with radiation, a two-dimensional detector in which a plurality of detection elements for detecting radiation from the radiation source are two-dimensionally arranged, and a grid which is placed in front of the two-dimensional detector to remove scattered radiation of the radiation. This device performs computation with respect to a subject image obtained by the two-dimensional detector by using the subject image and a gain image obtained by the two-dimensional detector, and executes removal of a grid pattern due to the grid and gain correction. The device reconstructs an image on the basis of the subject image obtained using the subject image from which a grid pattern due to the grid is removed and which is gain-corrected.
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English Abstract of JP 2000-107162 (Item A).
English Abstract of JP 2000-157530 (Item B).
English Abstract of JP 2001-188096 (Item C).
English Abstract of JP 2001-212139 (Item D).
English Abstract of JP 2002-325765 (Item E).
Canon Kabushiki Kaisha
Kiknadze Irakli
Morgan & Finnegan , LLP
Qlick Edward J.
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