title: Adverse effects of stationary grids.
abstract: By means of simple tests, the mechanisms of image impairment due to stationary grids were demonstrated. Several contributing factors were found. The fact that the grid strips are not clearly visible in the film does not indicate that image quality is not lowered by the grid. To a certain degree it demonstrates that the image quality is so low that not even the grid lines are perceptible.
mesh_terms: D005069:Evaluation Studies as Topic; D008027:Light; D011877:Radionuclide Imaging; D012542:Scattering, Radiation; D013679:Technology, Radiologic