X-ray scanners

摘要

The present application discloses an X-ray scanner having an X-ray source arranged to emit X-rays from source points through an imaging volume. The scanner may further include an array of X-ray detectors which may be arranged around the imaging volume and may be arranged to output detector signals in response to the detection of X-rays. The scanner may further include a conveyor arranged to convey an object through the imaging volume in a scan direction, and may also include at least one processor arranged to process the detector signals to produce an image data set defining an image of the object. The image may have a resolution in the scan direction that is at least 90% as high as in one direction, and in some cases two directions, orthogonal to the scan direction.

主权项

1. An X-ray scanner comprising:
a plurality of X-ray source points positioned around an imaging volume, wherein each of said plurality of X-ray source points comprises an electron gun adapted to produce a current, a focusing element, and a target region and is configured to emit X-ray radiation; an array of X-ray detectors positioned around the imaging volume and arranged to output detector signals in response to detecting said X-ray radiation; a conveyor arranged to convey an object through the imaging volume in a scan direction; and at least one processor arranged to process the detector signals to produce an image data set defining an image of the object, wherein the X-ray scanner is arranged to control said current so that it varies in proportion to a speed of the conveyor.