X-ray CT apparatus and method of controlling it

Details X-ray CT apparatus and method of controlling it X-ray CT apparatus and method of controlling it

2005-03-01

2005-03-01

Bruce, David V (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S015000, C378S019000, C378S901000

Reexamination Certificate

active

06862336

ABSTRACT:
For the purpose of determining an offset of the position of an X-ray tube from a prespecified position, and correcting axially projected data D1and pixel projection data D2based on the determined offset, proper axially projected data D1can be obtained by an X-ray focal spot2102and a detector2103by determining axially projected data D1at a point2104using projection data D0obtained by a channel that detects an X-ray emitted from the X-ray focal spot2102and passing through the point2104,and shifting the determined axially projected data D1by a distance DIS1in the (+)-direction of the x-axis.

REFERENCES:
patent: 4626991 (1986-12-01), Crawford et al.
patent: 4680709 (1987-07-01), Srinivasan et al.
patent: 6466639 (2002-10-01), Nukui et al.
patent: 20030169842 (2003-09-01), Nishide et al.

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