X-ray computer tomography apparatus

Details X-ray computer tomography apparatus X-ray computer tomography apparatus

2011-01-04

2011-01-04

Glick, Edward J (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S015000

Reexamination Certificate

active

07864916

ABSTRACT:
An X-ray computer tomography apparatus includes a cone beam X-ray tube X-rays, a two-dimensional array type X-ray detector, a rotating mechanism which supports the X-ray tube, together with the X-ray detector, so as to be rotatable around the object, a reconstruction processing unit which reconstructs a full scan image based on projection data, of the projection data, which corresponds to a view count corresponding to one rotation and also reconstructs a short scan image based on projection data corresponding to a view count smaller than the view count corresponding to one rotation, a CT value shift distribution generating unit which generates a spatial distribution of CT value shifts originating from the smaller view count based on the full scan image and the short scan image, and a correcting unit which corrects the short scan image based on the spatial distribution of the CT value shifts.

REFERENCES:
patent: 5396528 (1995-03-01), Hu et al.
patent: 6560308 (2003-05-01), Zmora
patent: 2005/0175140 (2005-08-01), Tsujii
patent: 2009/0028288 (2009-01-01), Horiuchi et al.

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