Agfa Healthcare Nv

Agfa-gevaert Healthcare Gmbh

Agfa Corporation

Agfa-gevaert Ag

Agfa-fevaert Aktiengesellschaft

Ralph Thoma

Georg Reiser

Marc Christian Weber

Robert Fasbender

Andreas Bode

Stefan Stallmeister

Rupert Dedler

Heike Minwegen

Stephan Baunach

Herbert Gebele

Tobias Damm

Peter Mueller

Volker Melzer

Martin Lind

Christian Schulz

Paul Leblans

Thomas Zehetmaier

Werner Nitsche

Juergen Mueller

Michael Weinberger

J&uuml;rgen M&uuml;ller

Bernhard Sang

Ronian Siew

Jürgen Müller

An apparatus () for erasing a storage phosphor layer () includes a drive () for producing a relative movement between the storage phosphor layer () and the radiation source (), the storage phosphor layer () lying or being moved in a holding plane (), and a reflector () for reflecting radiation. The reflector () is arranged and designed to reflect erasing radiation reflected by the storage phosphor layer () in the direction of the storage phosphor layer (). A width () of the reflector () in the direction () of the relative movement is at least ten times as great as a smallest distance () between the reflector () and the holding plane ().

Storage phosphor layer and system and method for erasing same

An apparatus () for erasing a storage phosphor layer () with a holding plane () in which the storage phosphor layer () lies or can be moved, a radiation source () for irradiating the storage phosphor layer () with erasing radiation which is suitable for erasing the storage phosphor layer (), and a reflector () for reflecting erasing radiation in the direction of the holding plane (). In order to increase the erasing efficiency, provision is made such that the reflector () is arranged and/or designed such that it reflects erasing radiation, which is reflected by the storage phosphor layer (), in the direction of the storage phosphor layer (), and the radiation source () is disposed on a base (), the base () being disposed closer to the holding plane () than at least part of the reflector ().

An apparatus () for erasing a storage phosphor layer () includes a radiation source () for producing and emitting erasing radiation, a drive () for producing a relative movement between the storage phosphor layer () and the radiation source (), the storage phosphor layer () lying or being moved in a holding plane (), and a reflector () for reflecting radiation. The reflector () is arranged and designed to reflect erasing radiation reflected by the storage phosphor layer () in the direction of the storage phosphor layer (). A further reflecting surface () is provided for reflecting erasing radiation which is positioned opposite the reflector (), as considered in a direction at right angles to the direction () of the relative movement.

A device for acquiring information contained in a phosphor layer comprises a light source () for irradiating the phosphor layer () with excitation light () that is suitable for exciting emission light () in the phosphor layer (), a detector () for detecting the emission light () that has been excited in the phosphor layer (), and a filter device (), arranged between the phosphor layer () and the detector (), that is substantially transparent in a first wavelength range (W) of the emission light () and substantially non-transparent in a second wavelength range (W) of the excitation light (). To increase the reliability during the acquisition of the emission light, the filter device () is made substantially non-transparent in at least a third wavelength range (W) having longer wavelengths than the second wavelength range (W) of the excitation light ().

Device for acquiring information contained in a phosphor layer

The present invention reduces the influences of electromagnetic fields during reading out of image signals from memory phosphor films. This is done by pre-amplifying the detection signals obtained from a detection device, in particular a CCD array, before further processing, for example by an analog-to-digital converter. An amplification register for electron multiplying can be used for the amplification. In this way individual photon sensitivity can be achieved when reading out X-ray images.

Phosphor read-out device and phosphor read-out process

A device for acquiring information that is contained in a phosphor layer which includes a light source () for irradiating and exciting the phosphor layer () to produce emission light () containing the information, a detector () for acquiring the emission light () produced in the phosphor layer () and a filter device (), which is arranged between the phosphor layer () and the detector () and/or between the phosphor layer () and the light source (). To increase the reliability in the acquisition of the emission light (), the filter device () includes at least two filter elements structured as absorption filters and joined to each other.

An imaging system is disclosed that includes an illumination source, a diffractive modulator, imaging optics, and a coherence reduction system. The illumination source is for producing an illumination field. The diffractive modulator is for receiving the at least partially coherent illumination field and producing a modulated illumination field. The imaging optics are for directing the modulated illumination field toward an imaging surface. The coherence of one of the illumination field and the modulated illumination field is reduced.

System for correction of spatial cross-talk and pattern frame effects in imaging systems

An imaging system is disclosed that includes an illumination source, a modulator and a variable Fourier diaphragm. The illumination source produces a first illumination field having a first frequency and a second illumination field having a second frequency. The modulator receives the first illumination field and the second illumination field, and produces a first modulated illumination field and a second modulated illumination fields. The variable Fourier diaphragm selectively passes one of the first modulated illumination field and the second modulated illumination field.

System and method for use of dark field fourier diaphragm in multi-frequency imaging

The invention relates to a device ( ) for reading out information stored in a phosphor carrier ( ) and to an X-ray cassette ( ) which contains the phosphor carrier ( ) and such a device. The inventive device ( ) has a radiation source ( ) that can emit a first radiation source ( ) with which the phosphor carrier ( ) can be exited such that the carrier emits a second radiation ( ). This second radiation ( ) comprises an image of the information stored in the phosphor carrier ( ). The device ( ) additionally has a receiving means ( ) which contains a number of point elements (PD , . . . PDn) in order to receive the second radiation ( ) emitted from the phosphor carrier ( ) in a point-by-point manner. The second radiation of a point of the phosphor carrier ( ) can thus be received by each one of the point elements (PD , . . . ,PDn).

Device for reading out information stored in a phosphor-carrier, and an x-ray cassette

A device ( ) and a method for reading information stored in a phosphor layer ( ) is disclosed. The device ( ) includes a transparent carrier material ( ) on which the phosphor layer ( ) to be read is disposed. A radiation source ( ) emits an excitation radiation ( ) to excite the phosphor layer ( ), which in turn emits an emission radiation ( ). The emission radiation ( ) can be received by a receiver ( ). The radiation source ( ) is arranged on one side of the transparent carrier material ( ), whereas the receiver ( ) is arranged on the other side of the transparent carrier material ( ), thereby defining an optical path between the radiation source ( ) and the receiver ( ). According to the invention, a reflective layer ( ) for reflecting at least a portion of the excitation radiation ( ) is arranged in the optical path.

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Augsburg, Germany

Ralph Thoma