Siemens Aktiengesellschaft

Hans Heinrich

Gottfried Lange

Ingmar Feigt

Karl Kempter

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.

Apparatus for recording X-ray images

The invention relates to arrangements for the production of electroradiographic x-ray photographs wherein x-ray photoconductive layers are electrically charged at their surfaces and subsequently exposed to an image-forming irradiation with x-rays, such that, due to the influence of the rays which penetrate a body, charge images are obtained which can be rendered visible through the application of pigment particles. For the simultaneous production of several images, the invention provides that several layers be arranged in a cassette. An inventive arrangement is particularly suited for use in medical radiation diagnosis.

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Buckenhof, Germany

Hans Heinrich