X-ray bundle filtering device, bundle limiting device and medical diagnosis X-ray equipment

Abstract

The invention discloses an X-ray bundle filtering device, a bundle limiting device and medical diagnosis X-ray equipment. The X-ray bundle filtering device comprises a power source, a first filter sheet assembly with a first filter sheet, a second filter sheet assembly with a second filter sheet, and a separation-reunion device, wherein the power source drives the first filter sheet assembly to linearly reciprocate in the first direction; the height difference is formed between the second filter sheet and the first filter sheet; and in the motion stroke of the first filter sheet assembly and the second filter sheet assembly, the first filter sheet and the second filter sheet are respectively provided with action positions within an X-ray bundle range and non-acted positions positioned beyond the X-ray bundle range. Due to the setting of the separation-reunion device, the first filter sheet assembly and the second filter sheet assembly can simultaneously move or relatively move, and thus the first filter sheet assembly and the second filter sheet assembly can be controlled by a group of power sources, various filter grades are realized, the occupied space is saved, the cost is reduced, the structural design of the bundle limiting device is facilitated and the size of the bundle limiting device is effectively controlled.

Description

technical field [0001] The invention relates to an X-ray beam filtering device, a beam limiter and medical diagnostic X-ray equipment. Background technique [0002] In medical diagnostic X-ray equipment, the "quality" of radiation, that is, the energy distribution of X-ray quanta, is mainly determined by the filter connected after the X-ray tube, in addition to being related to the voltage on the X-ray tube. The filter is applied to 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 does not work on the film, but greatly increases the skin dose of the subject to cause damage. . The frequently used filter material is lead, and copper or copper-aluminum composite materials are used for high-energy radiation. [0003] In order to meet the medical needs, especially the diagnostic requirements of cardiology, it is necessary to use filter devices with different filter levels,...

AI Technical Summary

Problems solved by technology

Generally, two sets of power devices are required to control the two sets of filters to switch states, which leads to space occupation and cost increase

However, the space inside the beam limiter is relatively tight, which makes the structural design difficult or increases the volume of the beam limiter

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