What happens to gridlines in stationary and moving grids?

Gridlines can be observed in images taken with both stationary and moving grids, but the perception of these gridlines differs based on the type of grid and how the imaging is conducted.

In the case of stationary grids, the gridlines are more likely to be seen in images unless the grid is carefully aligned with the imaging beam or unless the technical factors utilized (such as the amount of scatter) are optimized to minimize their visibility. This suggests that the structure of the grid has an impact on image quality and can contribute to the overall appearance of grid artifacts if not managed properly.

For moving grids, or "reciprocating" grids, the design allows the grid to move during the imaging process, which helps to blur or eliminate the appearance of gridlines in the final image. However, depending on the speed and movement of the grid relative to the imaging beam, some faint gridlines may still be visible, especially if the movement is not synchronized well with the imaging exposure.

Therefore, the correct answer acknowledges that while stationary grids can lead to visible gridlines, moving grids have a mechanism that allows for reducing their visibility, making it easier for radiologists and technicians to produce clearer images. This understanding emphasizes the nuances between different grid systems and their effect on