| 摘要 |
<p>System for forming a video representation of an X-ray shadow picture of a body. The system comprises an X-ray source, an X-ray screen, a video circuit with scanning means and display means, and a plate positioned between the X-ray source and the body. The plate has a transparancy to X-radiation varying over its surface for spatially coding the X-rays. The system further comprises means included in the video circuit for decoding the signal produced by the scanning means so that in the picture produced by the display means, the influence of the scattered radiation caused by the body is substantially eliminated.</p> |
