X-ray beam filtering device, beam limiter and medical diagnosis X-ray apparatus

A filtering device and X-ray technology, which is applied in the field of medical diagnostic X-ray equipment, can solve problems such as injury and increase skin dose, and achieve the effects of small transmission error, meeting different use requirements, and high transmission precision

Active Publication Date: 2011-07-20
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The filter is set on the window of the X-ray tube, and its purpose is to absorb the soft rays with longer wavelengths in the primary X-rays. This type of long-wavelength X-rays has no effect on imaging, but it will greatly increase the skin dose of the subject and cause damage.

Method used

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  • X-ray beam filtering device, beam limiter and medical diagnosis X-ray apparatus
  • X-ray beam filtering device, beam limiter and medical diagnosis X-ray apparatus
  • X-ray beam filtering device, beam limiter and medical diagnosis X-ray apparatus

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Embodiment Construction

[0027] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0028] like Figure 1 to Figure 12 As shown, the medical diagnostic X-ray equipment in this embodiment includes an X-ray tube 26 , a beam limiter 34 and an X-ray imaging equipment 30 .

[0029] The X-ray tube 26 is used to emit X-rays.

[0030] like figure 1 and figure 2 As shown, the beam limiter 34 includes a housing 28 , a beam limiting device 27 and an X-ray beam filtering device 35 . The housing 28 is fixed on the X-ray tube 26 , and the housing 28 has a wire inlet 281 and a wire outlet 282 , both of which are located on the optical path of the X-ray beam 29 emitted by the X-ray tube 26 . The beam limiting device 27 is used to limit the radiation field size of the X-ray beam 29. The beam limiting device 27 has a beam limiting opening 271 for the X-ray beam 29 to pass through. After the beam is limited, it is emitted thr...

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PUM

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Abstract

The invention discloses an X-ray beam filtering device, a beam limiter and a medical diagnosis X-ray apparatus. The X-ray beam filtering device comprises a power source, a first linear transmission device, a second linear transmission device, a linkage device, a first filtering sheet and a second filtering sheet, wherein the power source drives the first linear transmission device to move; the first linear transmission device drives the first filtering sheet as well as the linkage device; the linkage device is connected with the second linear transmission device; the second linear transmission device drives the second filtering sheet; and the linkage device has a load travel driving the second linear transmission device to move and a no-load travel free from drive. By controlling the first and second filtering sheets to change between the position in an X-ray beam range and the position outside an X-ray range, the filtering combinations with different filtering thickness can be realized and can not only filter unnecessary radioactive rays in the X-ray beam, but also can meet different filtering requirements as well as different using requirements of medical workers to a relatively large degree.

Description

technical field [0001] The invention relates to a medical diagnostic X-ray device. Background technique [0002] In medical diagnostic X-ray equipment, the "quality" of the radiation, that is, the energy distribution of the X-ray quanta, is related to the voltage across the X-ray tube and also to the filter. The filter is set on the window of the X-ray tube, and its purpose is to absorb soft rays with longer wavelengths in the primary X-rays. This kind of long-wavelength X-rays does not work for imaging, but it will greatly increase the skin dose of the subject and cause damage. In order to meet medical requirements, especially diagnostic requirements in cardiology, different filter classes are required. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an X-ray beam filtering device, a beam limiter and medical diagnostic X-ray equipment capable of filtering X-ray beams and meeting various filtering requirements. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/00
Inventor 刘清宋隽涛
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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