| 摘要 |
<p>An x-ray examination system comprising an x-ray generator, an image intensifier tube connected to an output optical path and an x-ray exposure control arrangement which measures the light image intensity LI at the output of the image intensifier during fluoroscope, and from the relationship derives the exposure value IEXP1 of the switch-on tube current required to provide a desired exposure density during subsequent fluorography with a tube voltage VFL and exposure time TEXP, and wherein LA is a predetermined constant.</p> |
