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Electronic focus alignment of x-ray tubes

An X-ray tube and X-ray technology, applied in the field of electronic focus alignment of X-ray tubes, can solve time-consuming and troublesome problems

Active Publication Date: 2021-08-24
VAREX IMAGING CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mechanical alignment of the X-ray tube on the gantry can be time-consuming, cumbersome and iterative, especially for fine-tuned adjustments (e.g., submillimeter range)

Method used

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  • Electronic focus alignment of x-ray tubes
  • Electronic focus alignment of x-ray tubes
  • Electronic focus alignment of x-ray tubes

Examples

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Embodiment Construction

[0071] Before any embodiment of the invention is explained in detail, it is to be understood that the invention is not limited in application to the details of construction and the arrangement of parts set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or carried out in various ways. Numbers provided in flowcharts and processes are provided to clearly illustrate steps and operations and do not necessarily indicate a particular order or sequence. Unless otherwise defined, the term "or" may refer to a selection of alternatives (e.g., disjunctive operator, or exclusive-or) or a combination of alternatives (e.g., disjunctive operator, and / or, logical-or , or Boolean OR).

[0072] The present invention relates generally to electronic focus alignment (or central ray alignment) with radiation imaging systems (e.g., X-ray detectors), and more particularly to various methods and methods ...

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PUM

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Abstract

A technique for electronically aligning the central ray of an X-ray tube with a radiation detector is described. In an example, an X-ray system includes an X-ray tube and a Tube Control Unit (TCU). The X-ray tube includes a cathode including an electron emitter configured to emit an electron beam, an anode configured to receive the electron beam and generate X-rays having a central ray from electrons of the electron beam impinging on a focal point of the anode, and A steering magnetic multipole between the cathode and anode configured to generate a steering magnetic field from the steering signal. At least two poles of the steering magnetic multipole are located on opposite sides of the electron beam. The TCU includes at least one steering driver configured to generate a turn signal. The TCU is configured to convert the offset value into a turn signal.

Description

Background technique [0001] Unless otherwise indicated herein, the approaches described in this section are not prior art to the claims in the present disclosure and are not admitted to be prior art by inclusion in this section. [0002] An X-ray system typically includes an X-ray tube and an imager (or detector). The power and signal for the X-ray tube can be provided by a high voltage generator. An X-ray tube emits radiation, such as X-rays, towards a subject. The object is located between the X-ray tube and the imager. Typically, radiation passes through the object and impinges on the imager. The internal structure of the object causes attenuation of the radiation received at the imager as the radiation passes through the object. The imager then generates data based on the detected radiation, and the system converts or reconstructs the radiation attenuation into an image with spatial variance, which can be used to assess the internal structure of an object, such as a pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J35/14H01J35/24
CPCH01J35/24H01J35/147H01J35/153A61B6/035A61B6/54A61B6/582A61B6/584H01J35/305H05G1/52
Inventor B·D·坎菲尔德M·迈勒C·B·伍德曼尹仁宇
Owner VAREX IMAGING CORP