The use of a grid when filming does not require compensation of exposure conditions. Since the main component material of the grid is lead foil, it not only blocks the scattered rays, but also inevitably blocks a part of the original emission line, which reduces it to a certain extent. The degree of sensitivity of the film, so it is better to increase the exposure conditions than the grid in photography, that is, increase the tube voltage to increase the penetration of X-rays in order to achieve the purpose of compensation. Specific compensation data should be obtained in conjunction with clinical use.
In general, low-grid-ratio grids are suitable for low-kV tube voltages; high-grid-ratio grids are suitable for high-kV tube voltages.
Author:Lillian
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