X-ray CT scanner and scan method

Details X-ray CT scanner and scan method X-ray CT scanner and scan method

2008-03-25

2008-03-25

Thomas, Courtney (Department: 2882)

X-ray or gamma ray systems or devices

Source support

Including movable source

C378S039000

Reexamination Certificate

active

11491354

ABSTRACT:
In an X-ray CT scan, a distance between an X-ray generator and a rotation center and/or a distance between a X-ray detector and the rotation center can be changed according to a magnification of an image. A rotary device has an X-ray generator and an X-ray detector opposing to each other, provided to interpose an object between them. A rotary mechanism rotates the rotary device around a rotary axis, and a movement mechanism moves the rotary axis or the object in a plane perpendicular to the rotary axis. The rotation center in a viewpoint of CT scan different from the rotary axis is always kept at a point in a region of interest in the object according to a motion synthesized from the rotation of the rotary device and the movement of the rotary axis or the object.

REFERENCES:
patent: 2001/0036246 (2001-11-01), Graumann
patent: 2002/0122537 (2002-09-01), Yoshimura

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