Patent ID: 7643606
Filing Date: 2010-01-05
Classification: A61B,H01J,H05G

Abstract:
1. An x-ray computed tomography apparatus comprising: a stationary x-ray detector completely surrounding an examination volume in a first plane, and comprising a plurality of detector elements; a stationary device for generating x-ray radiation, comprising a single x-ray source extending annularly, relative to a ring axis, around said examination volume through an angle of 360° in a second plane, said first and second planes being perpendicular to said ring axis and defining a planar volume in which said examination volume is contained, and at least two light scanning units that each scan said x-ray source with a light beam to produce, in combination, an x-ray focus, moving along said x-ray source, on a target surface of said x-ray source, from which an x-ray beam emanates into and moves through said examination volume and successively strikes respective detector elements of said stationary x-ray detector that are momentarily opposite said x-ray focus; and said at least two light scanning units being disposed outside of said planar volume and each light scanning unit scanning only an angle range of less than 360°, without crossing said ring axis and, in combination, causing said x-ray focus to move through said angle of 360°.