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

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. ...

AI Technical Summary

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.

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