Varian Medical Systems, Inc.

Kasey Otho Greenland

Wayne Rollins Hansen

Todd S Parker

James Russell Boye

Dual-energy x-ray tubes. In one example embodiment, a dual-energy x-ray tube includes an evacuated enclosure, an anode positioned within the evacuated enclosure, a first cathode positioned within the evacuated enclosure, and a second cathode positioned within the evacuated enclosure. The first cathode and the second cathode are configured to operate simultaneously at different voltages.

Dual-energy X-ray tubes

An x-ray tube includes an evacuated envelope, and a cathode assembly and an anode assembly both disposed in the evacuated envelope. The cathode assembly includes a cathode shield, a supporting body disposed inside the cathode shield, and an electron source attached to the supporting body and partially enclosed by the cathode shield. The anode assembly includes a target configured to produce x-rays upon impingement by electrons produced by the electron source. The cathode shield comprises a shield base material and a layer over at least a portion of the base material. The layer comprises an emissivity enhancer having an emissivity greater than the emissivity of the shield base material. The layer may comprise an emissive coating applied on the portion of the base material. Alternatively, the layer may comprise a greened surface formed by a greening process.

Growing community of inventors

Salt Lake City, UT, United States of America

Kasey Otho Greenland