Apparatus for recording X-ray images
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United States of America Patent
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Nov 19, 1985
Grant Date -
N/A
app pub date -
Mar 28, 1984
filing date -
Apr 5, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to an apparatus for the taking of X-ray pictures, where there are between two radiation-transmitting electrodes two solid substance layers whose free sides lie in a charge storage layer. The first electrode is a photo-conducting layer which is impinged upon by image rays, while the second electrode is a photo-conducting layer which is impinged upon by an optical ray moved in a scanning raster, so that a reproducible signal is obtained. According to the invention, the time required per image is reduced and increased quantum yield is achieved at increased signal-to-noise ratio and greater dynamic range. There is correlated to the first photo-conducting layer a luminophor which transforms the image rays into light which is preferentially absorbed in this layer. An apparatus according to the invention is usable in particular in medical radio-diagnostics.
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