Device for reading out exposed imaging plates

A technology of imaging plate and equipment, applied in the direction of optics, optical components, radiation measurement, etc., to achieve good absorption effect

Inactive Publication Date: 2008-12-03
DURR DENTAL GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Otherwise, the shadow of the previous X-ra

Method used

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  • Device for reading out exposed imaging plates
  • Device for reading out exposed imaging plates
  • Device for reading out exposed imaging plates

Examples

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Embodiment Construction

[0037] In FIG. 1 , a combined device for reading and erasing an exposed imaging plate is indicated generally at 10 . The device comprises a reading unit generally indicated at 12 and an erasing unit generally indicated at 14 .

[0038] The reading unit 12 includes a cylindrical holding table / clamping table 16 and three belt conveyors 18 distributed circumferentially around the holding table, these conveyors 18 are mechanically coupled to each other and connected to an output shaft of a motor 20 connect. The motor 20 is in turn connected to a position sensor (Stellungsgeber) 22 . The position sensor provides an output signal on line 24 .

[0039] The holding table 16 has an annular gap 26 extending in the circumferential direction, through which an annular reading beam 28 emerges. Here, the reading beam refers to laser light whose wavelength is suitable for further exciting the metastable excited centers of the imaging plate. Details of the readhead are found in WO 01 / 18796...

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PUM

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Abstract

A combined device (10) for reading out and erasing imaging plates (30) comprises an eraser (14) disposed downstream of a readout unit (12) at a short distance thereof, said eraser being separated from the readout unit (12) by a light barrier (46).

Description

technical field [0001] The invention relates to a device for reading exposed imaging plates / storage films according to the preamble of claim 1 . Background technique [0002] The exposed imaging plate contains a latent x-ray image in the form of locally excited metastable excited color centers obtained by placing the imaging plate behind an object in the x-rays generated by the x-ray source. [0003] The latent image is read by scanning the imaging plate point by point with a small diameter reading beam. The wavelength of the read light is selected such that it excites the metastable excited center to a higher electronic state that decays rapidly under fluorescence. [0004] The fluorescence thus emitted is measured by a detection device which may, for example, contain a photomultiplier as photosensitive element. A transmission image of the object represented by the electrical signal can then be obtained from the electrical output signal of the detection device and the ele...

Claims

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Application Information

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IPC IPC(8): G03B42/08G01T1/29G02B26/10
CPCG03B42/08G01T1/2016G01T1/2014G02B26/10
Inventor M·汤姆斯
Owner DURR DENTAL GMBH & CO KG
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