| 摘要 |
<p>An apparatus for processing X-ray images includes a smoothing circuit consisting of a low-pass filter. When a pre-contrast image passes therethrough, the higher portion of the spatial frequency of the pre-contrast image is cut off. A contrast image consists of a vascular image added to the pre-contrast image. The subtraction of the smoothed pre-contrast image from the contrast image is carried out in a subtraction circuit. An image outputted from the subtraction circuit consists solely of the vascular image and the marginal images of skeletons, etc. This image permits easy ascertainment of vascularity on the surfaces of skeletons, etc.</p> |
