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US 4,508,966 AGranted
Recording and readout apparatus for X-rays
AssigneeSiemens Aktiengesellschaft
InventorsRaimund Oberschmid, Ingmar Feigt
Life of this patent
Estimating the term…
Abstract
A recording and readout apparatus for X-rays has a storage layer whose charge distribution which is generated and stored by means of x-radiation during the recording is read out light-optically in point-by-point fashion. An image data storage of the readout may be provided along with a display apparatus for image observation.
Claims7
A recording and readout apparatus for X-rays, comprising:
- a layer means comprising a Bismuth.sub.12 Oxide compound in which, given an applied external electric field in association with the layer means, by use of incident X-rays, an electric charge distribution corresponding to a respective X-ray image is generated and stored in the layer means;
- a light ray generating and scanning means for a point-by-point readout of the stored charge distribution by scanning the layer means in a point-by-point fashion;
- said layer means having generated therein electric photoconduction by exposure to said light ray;
- and opposite surfaces of the layer means each being covered with an electrode, at least one of the electrodes being electrically insulated by an insulating layer from the layer means;
- and means for connecting said electrodes during readout operations to a current-amplifier with low input-impedance and during recording to an electric field source.
2 more elements
A recording and readout apparatus for X-rays, comprising:
- a layer means comprising a Bismuth.sub.12 Oxide compound;
- electrodes on opposite faces of the layer means, at least one of the electrodes being insulated from the layer means;
- means for applying an electrical potential to the electrodes to create an electrical field at the layer means during recording of X-rays and for applying a sensing amplifier to the electrodes during readout;
- light ray generating and scanning means for a point-by-point readout of a charge distribution which is stored in the layer means as a result of incident X-rays;
- and the layer means being designed so that it will retain the electric charge distribution therein created by the incident X-rays and which will generate electric photoconduction when exposed to the light ray.
2 more elements
Dependencies are inferred from the claim text.