Influence of human body on x ray grid artifact

Five factors affecting the artifacts of x ray grid are: x ray grid, detector, monitor, compression ratio of display and human body.
According to the mechanism of moire pattern, if the human body is shielded at the front of the detector instead of a uniform aluminium film at the front of the detector in X-ray photography, then the human body will break the ring because the irregular change of the figure human body density produced by the x ray grid in the last period of space will weaken the moire pattern caused by the filter shed. . However, the moire pattern can not be eliminated in the human body with homogeneous tissue and inhuman density compared with the x ray grid.

Author：X Ray Grids Maker