A New Method for Evaluating the Radiographic Imaging Quality using the Beam Stopper

A new method was developed for evaluating radiographic imaging quality by introducing a beam stopper. The sharpness is estimated by this method for a radiographic screen-film system by taking a radiograph of the beam stopper instead of the conventional X-ray slit. Because the contrast difference relates directly to the visibility of the radiographs, the beam stopper estimation relates directly to the visual rating of blurring systems.