Patent ID: 9453937
Filing Date: 2016-09-27
CPC Classification: G01N,G01T,G01V

Claim Text:
1. A stationary CT apparatus, comprising: a scanning passage; a stationary X-ray source arranged partially around the scanning passage and comprising a plurality of ray emission focal spots; and a plurality of stationary detector modules arranged partially around the scanning passage and disposed opposite the X-ray source, elongation lines of external sides of sectorial ray beams emitted from two of the ray emission focal spots respectively arranged at one end and the other end of the plurality of ray emission focal spots intersect at a point of intersection, and a line formed by connecting the point of intersection to a central point of a ray receiving surface of each of the detector modules is perpendicular to the ray receiving surface of the each of the detector modules, when viewed in a plane intersecting the scanning passage, a first one of the two ray emission focal spots is arranged at the one end and a second one of the two ray emission focal spots is arranged at the other end; when viewed in the plane intersecting the scanning passage, the external side of the sectorial ray beam emitted from the first ray emission focal spot is located on one side that is away from the plurality of ray emission focal spots except the first ray emission focal spot, while the external side of the sectorial ray beam emitted from the second ray emission focal spot is located on the other side that is away from the plurality of ray emission focal spots except the second ray emission focal spot.