Apparatus for producing x-ray images by computer radiography
AssigneeSiemens Aktiengesellschaft
InventorsGottfried Lange, Michael Vieth
Life of this patent
Estimating the term…
Abstract
An apparatus for producing x-ray images by computer radiography has a storage plate on which x-rays are incident after passing through an examination subject, and an image reader for detecting the photo-stimulatable luminescence of the storage plate. The storage plate has a carrier which is impenetrable by the radiation beams used for detecting the luminescence, the carrier having two major flat sides each having a photostimulatable storage layer thereon. Each side has a read-out system associated therewith for double sided read-out of the storage plate. By undertaking a double-sided read-out, increased absorption of the x-rays in the storage plate can be exploited, and thus a correspondingly increased efficiency in the read-out can be obtained.
Claims19
An apparatus for producing x-ray images of an examination subject disposed in an x-ray beam comprising:
- a storage plate disposed for receiving x-radiation after passage through said examination subject, said storage plate having a carrier with two major faces and a photo-stimulatable storage layer disposed on each of said faces;
- and
- a double read-out means for read-out of each of said storage layers, said double read-out means including means for simultaneously separately exciting each of said storage layers with a read-out radiation beam, said carrier being opaque to said read-out radiation beam, and means for simultaneously separately reading out each of said storage layers upon excitation thereof.
An apparatus for producing x-ray images of an examination subject disposed in an x-ray beam comprising:
- a storage plate disposed for receiving x-radiation after passing through said examination subject, said storage plate having a carrier with two major faces and a photo-stimulatable storage layer disposed on each of said faces;
- a double read-out means including two read-out systems for respectively reading out each of said storage layer, each read-out system including a radiation source for generating a read-out radiation beam, means for sweeping said beam along a line of one of said storage layers, a photomultiplier having a plurality of inputs for receiving stimulated light from one of said storage layers generated by the read-out beam incident thereon and for converting said stimulated light into an electrical signal;
- means for moving said storage plate during read-out thereof for permitting said read-out beams of said read-out systems to cover substantially all of said major faces;
- and
- means having inputs connected to the outputs of said read-out systems for generating a visible image of said examination subject from said electrical signals.
Dependencies are inferred from the claim text.