| 摘要 |
A scanning radiography apparatus incorporating an image processor comprising a subtraction device for the formation of difference images by mutually subtraction of image information from sub-images which have been recorded with a mutually different value for at least one image-determining parameter, such as the presence or absence of a contrast medium, or a different wavelength for the imaging radiation, in order to form scanograms in which, for example, blood vessels are reproduced in an exactly localized manner. |
