Abstract
One of the digital radiography system, the Computed Radiography (CR) system (Fuji Computed Radiography CR-201®, Fuji Photo Film Co., Ltd. Tokyo) using photostimurable phosphor has been newly developed in Japan. In this study, we estimated how two functions among several image processing function in this equipment, the superimposed and subtracted image-processing functions, were useful on X-ray diagnosis in equine veterinary practice. And then, we studied the usefulness of the superimposed image-processing function on diagnosis by using a high potential X-ray tube and of the subtracted image-processing function in elective angiography with intra-arterial injections. As a result, it was found that superimposed image-processing function was effective enough for reducing the X-ray dose, or for photography under the conditions of low X-ray tube voltage and short exposure time. By using this function, we could avoid an unclear image caused by the horse's movement by shortening the exposure time and the amount of scattering X-ray dose was also decreased by lowering the X-ray tube voltage. In addition, it was found that, by using the subtracted image-processing function, diagnostic value of angiogram could be improved and lower concentration of contrast medium could be used.
