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Computed tomography system for imaging of human and small animal

A tomography, computer technology, applied in the field of carbon nanotube field emission cathodes, which can solve problems such as increasing X-ray intensity and reducing data collection time

Active Publication Date: 2011-11-16
THE UNIV OF NORTH CAROLINA AT CHAPEL HILL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in most computed tomography systems, except for synchrotron radiation sources, a continuous energy x-ray source is used instead of monochromatic x-rays to increase x-ray intensity and thereby reduce data collection time

Method used

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  • Computed tomography system for imaging of human and small animal
  • Computed tomography system for imaging of human and small animal
  • Computed tomography system for imaging of human and small animal

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Embodiment Construction

[0023] The x-ray system and x-ray imaging method for computed tomography disclosed herein are based on our previous publications, including: U.S. Patent Application No. 09 / 679,303, entitled "X-RAY GNERATING MECHNISM USING ELECTRON FIELD EMISSIONCATHOD"; U.S. Patent Application No. 10 / 051,183, entitled "LARGE-AREAINDIVIDUALLY ADDRESSABLE MULTI-BEAM X-RAY SYSTEM AND METHOD OFFORMING THE SAME," and U.S. Patent Application No. 10 / 309,126, entitled "X-RAYGENERATING MECHANISM USING ELECTRON FIELD EMISSION CATHODE", the entire disclosures of these applications are incorporated herein by reference. US Patent Application No. 09 / 679,303 discloses x-ray generating devices comprising nanomaterials. U.S. Patent Application No. 10 / 051,183 discloses an x-ray generating structure having a plurality of stationary, individually electrically addressable field emission electron sources having A substrate that can be electrically switched at a predetermined frequency to field-emit electrons in a ...

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Abstract

The present invention provides a computed tomography device comprising an x-ray source and an x-ray detecting unit. The x-ray source comprises a cathode with a plurality of individually programmable electron emitting units that each emit an electron upon an application of an electric field, an anode target that emits an x-ray upon impact by the emitted electron, and a collimator. Each electron emitting unit includes an electron field emitting material. The electron field emitting material includes a nanostructured material or a plurality of nanotubes or a plurality of nanowires. Computed tomography methods are also provided.

Description

[0001] A statement about federally funded research or development [0002] At least some aspects of this invention were made with Government support under a grant from the Office of Naval Research (Contract No. N00014-98-1-0597). The government may have certain rights in this invention. technical field [0003] The present invention generally relates to field emission cathodes for x-ray radiation sources. More specifically, the present invention relates to carbon nanotube field emission cathodes and the manufacture of such cathodes and their use in linear or areal x-ray radiation with individually addressable multi-beam x-rays for applications such as diagnostics, imaging and inspection source work. Background technique [0004] In the following description of the background of the invention, reference is made to certain structures and methods. These references are not necessarily to be taken as an admission that these structures and methods qualify as prior art under the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J35/32A61BA61B6/03H01J35/22
CPCA61B6/4028A61B6/4275A61B6/508A61B6/032B82Y10/00A61B6/541A61B6/4085A61B6/5235A61B6/482
Inventor 周子刚卢健平李岳林伟立程远章健
Owner THE UNIV OF NORTH CAROLINA AT CHAPEL HILL