TV pick=up for X=ray diagnostic device - uses semiconductor image converter permitting combination of two X=ray images to give final high contrast image

摘要

A t.v. receiver for displaying an X-ray image has an image amplifier chain (9-24) which includes a semiconductor image converter (9). A detector (14) recognises over exposure of the image converter (9) and in such cases ensures the taking of two X-ray images by the image converter (9) of different brightness. The two images are then combined in a mixing step (22) whereby the dark regions from the over exposed image are combined with the light image regions from the less exposed image. The resulting image has a good contrast, pref. using CCD sensors. USE/ADVANTAGE - Chiefly medical field. Single image of light contrast obtained without any loss of quantum statistics.