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US 8,542,801 B2Granted
X-ray tube with secondary discharge attenuation
AssigneeGeneral Electric Company
InventorsEthan James Westcot, Thomas Dean Schaefer, Kalyan Koppisetty
Life of this patent
Estimating the term…
Abstract
The present embodiments relate to off-focal X-ray radiation attenuation within X-ray tubes, for example X-ray tubes used in CT imaging. In one embodiment, an X-ray tube for off-focal X-ray radiation attenuation is provided. The X-ray tube includes a cathode, a target, and a magnetic focal spot control unit having at least one electromagnet encased in a resin loaded with X-ray attenuating material.
Claims25
An X-ray tube, comprising:
- a cathode configured to output an electron beam;
- a target configured to receive the electron beam and to generate X-rays;
- magnetic focal spot control unit disposed between the cathode and the target and configured to generate electromagnetic fields to affect the electron beam, the magnetic focal spot control unit comprising at least one electromagnet encased in a resin loaded with an X-ray attenuating material.
An electromagnet for an X-ray tube, comprising:
- an electromagnet assembly for a magnetic focal spot control unit configured to be disposed between a cathode and a target of an X-ray tube and configured to generate electromagnetic fields to affect the electron beam, the electromagnet being encased in a resin loaded with an X-ray attenuating material.
A method of forming an electromagnet, comprising:
- doping a resin with an X-ray attenuating material;
- winding a coil around a magnet core;
- and
- encasing the magnet core and the coil in the loaded resin.
1 more element
Dependencies are inferred from the claim text.