The X-ray Grid Brief Introduction

The X-ray grid is used to filter out the influence of scattered rays on the film. To filter out the influence of scattered rays on the film, it should be placed between the human body and the film. Most of the scattering lines can be filtered out, and only a small part of the scattering lines can be missed. When X-ray passes through the human body, the Compton effect produces scattered rays, which fog the photos and reduces the contrast. To improve the image quality, it is necessary to reduce the influence of scattered rays on the photos, and the most effective method is to use X-ray grids.

In clinical application, generally, many people think that the higher the grid ratio of the X-ray grid is, the stronger the ability to eliminate the scattered lines, and the greater the exposure of patients. The higher the grid density, the greater the dose to patients. In fact, this is not the case that the higher the grid ratio and the higher the grid density, the better.

In daily work, the selection of appropriate X-ray grid needs to be determined according to the size of frequent application of KV. For example, when using high KV photography, it is better to use 10:1 or 12:1 filter grid, and when taking photography for more than 14cm thick parts, generally 8:1 or 10:1 grid can be applied. The grid with high grid density is usually fixed grid. The patient’s dose increases many times without the use of the grid. Therefore, the following two factors should be kept in mind when using the grid:

First,increase the grid ratio of the X-ray grid, the dose is increased,Second, high grid ratio X-ray grids are generally used for High KV photography.

If you need the X-ray grid, please contact us.

Author：肖恩