Types of grids and their respective structural characteristics?

There are many types of x ray grids, which can be divided into the following categories according to their structure, material and movement. According to its structure classification, it can be divided into three types: convergence grid, parallel grid and cross grid. According to its material classification, it can be divided into metal and non-metal. According to its movement mode, it can be divided into fixed type and movable type. The following is a separate description.

The convergence grid, the parallel grid, and the cross grid are the most widely used in the grid, and the structural characteristics are analyzed.

Structure: Convergence grid: There is a flat plate on the outside of the grid to protect the gap between the lead strip and the lead strip inside the grid. The strip filler between the lead strip and the lead strip is concentrated at the focus. The direction of the lines is arranged obliquely to ensure that the horizontal extension lines of each lead strip are brought together and then packaged up and down with an aluminum plate. The characteristic of the convergence grid is that each lead strip in the interior is inclined at a certain angle to the center with the center lead strip as a midpoint, so that the horizontal extension lines of the strips of the strips are gathered together, and the line gathered together is called Convergence line. The point at which the convergence line intersects the vertical line at the center of the grid is called the focus. The structure is shown below.

Author：Alina