Manufacturing method of filter grating for removing scattered x-rays

Abstract

The present invention aims to provide a manufacturing method of a filtering grating for scattered X-ray removal, which can easily and inexpensively manufacture primary X-rays with excellent transmissison characteristics. The method comprises a run-through pattern forming process of forming a primary processing substrate provided with a run-through pattern of a plurality of hexagonal unit run-through parts H at specific intervals by illuminating synchronous acceleration light beams to a resin substrate GS; and an electroless plating processing process of forming electroless plating layers on surfaces and reverse faces of connection parts B among the unit run-through parts H and inner faces of the unit run-through parts H by impregnating the primary processing substrate into an electroless plating solution containing a metal (Au) with X-ray absorptivity.

Description

technical field [0001] The present invention relates to a filter grid for removing scattered X-rays used in X-ray image processing apparatuses (X-ray image handling apparatuses) such as analog / digital X-ray imaging devices or X-ray CT devices, mammography, and CR manufacturing method. Background technique [0002] In the X-ray image processing apparatus, X-rays radiated in a direction independent of the incident X-rays (primary X-rays) transmitted through the subject, so-called scattered X-rays (secondary X-rays), cause the contrast of the imaging screen In many cases, a reduction in sharpness or sharpness becomes an obstacle to an accurate diagnosis. To remove the scattered X-rays, devices called anti-scatter grids for removing scattered X-rays (hereinafter sometimes simply referred to as “filter grids”) are used. [0003] The filter grid for removing scattered X-rays has an X-ray-absorbing part made of a material with high X-ray absorption (lead, tungsten, etc.) and an X...

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Problems solved by technology

[0011] However, in Problem 2, since the structural strength of the air-filter grating is logically dependent on the structural strength of the X-ray absorbing part, if the problem 1 is to be solved, the X-ray receiving surface (incident The size (area) (S2) of the surface) decreases and the aspect ratio increases, making it difficult to maintain mechanical strength (Problem 3)

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