Stereoscopic x-ray tube
AssigneeSiemens Aktiengesellschaft
InventorHeinz Horbaschek
Life of this patent
Estimating the term…
Abstract
A stereoscopic x-ray tube has an evacuated housing with a motor-driven anode dish therein, as well as at least two cathodes. The cathodes are disposed for directing electrons onto two respective foci within at least one track of the anode dish. Each of the foci generates a beam of useful x-rays, the two beams alternating. The anode dish is divided into at least one pair of segments of identical size, each segment emitting x-rays of a different intensity, so that only one segment in each pair can emit useful x-rays. The cathodes are disposed such that their respective foci are spaced at an uneven multiple of the length of the track within a segment.
Claims7
An x-ray system having a stereoscopic x-ray tube to direct x-rays toward an examination subject, said stereoscopic x-ray tube comprising:
- an evacuated housing;
- an anode dish disposed in said housing divided into at least one pair of segments of identical size, each segment in a segment pair emitting x-radiation, means for enabling only one segment in a segment pair to substantially emit x-radiation toward said examination subject;
- at least two cathodes, wherein each cathode comprises a coil disposed in said housing, each coil having a focus associated therewith on said anode dish, the foci on said anode dish being spaced at a distance corresponding to an uneven multiple of the length of a track, which said focus would follow, within one of said segments;
- and
- means for rotating said anode dish.
Dependencies are inferred from the claim text.