X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Reexamination Certificate
2009-10-09
2011-10-25
Song, Hoon (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
C378S004000
Reexamination Certificate
active
08045676
ABSTRACT:
A radiation imaging apparatus acquires information on a scattered radiation distribution at each rotation angle preliminarily determined for a rotation unit, based on images respectively obtained from a first radiation detection sensor having no grid, and a second radiation detection sensor having a grid. Then, the radiation imaging apparatus corrects the image obtained from the second radiation detection sensor based on the information on the scattered radiation distribution so as to reduce influence of scattered radiation thereon. Next, the radiation imaging apparatus performs reconstruction processing based on the image corrected by the correction unit.
REFERENCES:
patent: 2007/0253525 (2007-11-01), Popescu
patent: 2009/0092222 (2009-04-01), Okamoto et al.
patent: 2004-121446 (2004-04-01), None
Canon Kabushiki Kaisha
Canon USA Inc IP Division
Song Hoon
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