What are the specifications for the grid?

Because the filter screen filters out the characteristics of the ray, it will absorb a small part of the original emission line while filtering out the scattered line. Therefore, the exposure condition should be increased to increase the amount of the original emission line to offset the filter line. The amount of original emission line consumed by the gate to ensure image quality. It is necessary to increase the amount of the original emission line by means of tube voltage compensation. It can be concluded that the value of the tube voltage used in the grid of the low gate ratio is low, and the value of the tube voltage used in the grid of the high gate ratio is high because the grid The greater the ratio, the stronger the ability to filter out the scattered lines, and the higher the amount of the original emission line absorbed by the same reason.

Author：Alina