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Apparatus and method for improved transient response in an electromagnetically controlled x-ray tube

An x-ray, electromagnetic coil technology applied in the field of improved transient response, which can solve problems such as limitations

Active Publication Date: 2012-07-04
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when considering resistive materials as emitter sources, the range of design options for forming the electron beam from the emitter can be limited by the shape of the filament

Method used

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  • Apparatus and method for improved transient response in an electromagnetically controlled x-ray tube
  • Apparatus and method for improved transient response in an electromagnetically controlled x-ray tube

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Embodiment Construction

[0024] The operating environment of an embodiment of the invention is described with respect to a computed tomography (CT) system. Those skilled in the art will appreciate that embodiments of the present invention are equally applicable for use with any multi-slice configuration. Furthermore, embodiments of the invention will be described with respect to detection and conversion of x-rays. However, those skilled in the art will further appreciate that the embodiments of the present invention are equally applicable to the detection and conversion of other high frequency electromagnetic energies. Embodiments of the present invention will be described with respect to "third generation" CT scanners, but with many implementations of x-ray tubes such as x-ray or mammography systems, other CT systems, surgical C-arm systems, and other x-ray tomography systems. The same applies to other medical imaging systems.

[0025] figure 1 is a block diagram of an embodiment of an imaging sys...

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Abstract

An x-ray tube assembly includes a vacuum enclosure that includes a cathode portion, a target portion, and a throat portion having a plurality of recesses formed therein to break up eddy currents generated in the throat portion. The throat portion has an upstream end coupled to the cathode portion and a downstream end coupled to the target portion. The x-ray tube assembly also includes a target positioned within the target portion of the vacuum enclosure, and a cathode positioned within the cathode portion of the vacuum enclosure. The cathode is configured to emit a stream of electrons through the throat portion toward the target.

Description

technical field [0001] Embodiments of the present invention relate generally to diagnostic imaging, and more particularly to apparatus and methods for improved transient response in electromagnetically steerable x-ray tubes. Background technique [0002] An x-ray system typically includes an x-ray tube, a detector and a support structure for the x-ray tube and the detector. In operation, an imaging gantry (on which a subject rests) is located between the x-ray tube and the detector. The x-ray tube typically emits radiation, such as x-rays, towards the object. The radiation typically passes through the object on the imaging gantry and strikes the detector. As radiation passes through the object, the internal structure of the object causes spatial variations in the radiation received at the detector. The detector then transmits the received data, and the system converts these radiation changes into images, which can be used to evaluate the internal structure of the object. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J35/02H01J35/24
CPCH01J2235/1216H01J35/14H01J2235/16H01J35/16H01J35/147H01J35/153
Inventor C·S·罗杰斯M·A·弗兰特拉E·J·韦斯特科特P·A·扎沃德什基
Owner GENERAL ELECTRIC CO
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