Agfa Healthcare Nv

Agfa Nv

Agfa-gevaert Healthcare Gmbh

Rainer Nebosis

Rainer Scheunemann

Edgar-Gerald Kopp

Georg Reiser

Johannes Hölzl

Roland Reuter

Johannes Hoelzl

Vladimir Zemanek

Bernd Gerstlauer

Detlef Brautmeier

Axel Kasper

Wolfgang Schorre

Dirk Vandenbroucke

Paul Leblans

Michael Ted Ciona

Geert Wellens

Vladimír ZEMÁNEK

A method and system for accurately determining the SID (source-image-distance) in a radiography configuration with a wireless radiographic detector, and a method and system for determining the thickness of a patient in a radiography configuration. The method for determining the SID is based on a method to accurately determine distances between a set of generator arrays and sensor arrays. The generator arrays and sensor arrays are preferably orthogonally arranged magnetic field generators and sensors that allow measurements of distances without being affected by presence of human tissue between the generator and sensor arrays.

Method and system for determining the SID and the thickness of a patient in a radiographic system

A method and system for accurately localizing a wireless radiographic detector in a radiography system, based on a method to accurately determine distances between a set of generator arrays and sensor arrays. The generator arrays and sensor arrays are preferably orthogonally arranged magnetic field generators and sensors, that allow measurements of distances without being affected by presence of human tissue between the generator and sensor arrays.

Method and system for determining the position of a portable image detector assembly with respect to an emission point of an X-ray source in a radiographic system

A phase contrast imaging (PCI) method in which, instead of using an analyzer grid, detector pixels are grouped and only a part of the total pixels are used to calculate a phase contrast image. In second, third, etc. steps, the pixels which were not used in the previous recalculation are used additionally to recalculate second, third, etc. phase contrast images. Finally the different phase contrast images are fused to result in a full image.

Phase contrast imaging method

A sliding arrangement for mobile X-ray devices enabling functionality for tomosynthesis acquisitions on systems without this functionality. The sliding arrangement substitutes a conventional X-ray collimator mount for fixing an X-ray collimator onto the gantry of a mobile X-ray system, and which adds the supplementary mechanical functionality that is required to perform tomosynthesis acquisitions.

Sliding arrangement for mobile tomosynthesis X-ray system

Mechanisms for synchronizing the read-out sequence of non-tethered digital X-ray detectors in a radiography system with an X-ray generator or an X-ray source for use in digital wireless detectors where a synchronization of the digital wireless detector circuitry with the start of the actual exposure is required. The mechanisms can be applied in X-ray devices that are based on digital flat panel detectors, and wherein the digital detectors do not have a tethered connection with the modality for receiving the activation signal.

High-speed magnetic synchronization of wireless detector

A radiation image capturing system includes a processing unit that determines at least three distances between at least one first distance sensor provided at a radiation generation unit and at least three second distance sensors provided at a detection unit based on one or more signals emitted by the first distance sensor, and that determines an orientation of the radiation generation unit and the detection unit relative to each other based on inclination information provided by a first sensor unit provided at the radiation generation unit and a second sensor unit provided at the detection unit. Alternatively, the processing unit determines distances between at least three first distance sensors provided at the radiation generation unit and at least three second distance sensors provided at the detection unit based on signals emitted by the at least three first distance sensors to determine an orientation of the radiation generation unit and the detection unit relative to each other.

Radiation image capturing system and method

A method and system for acquiring an image of an object using optical coherence tomography using an interferometer and a detector, wherein the object is irradiated with light emitted by the interferometer, light reflected by the object is fed back into the interferometer and detected by the detector, the image of the object is derived from the detected light, and a file containing information, in particular graphical information and/or photographic image information, relating to the object is assigned to and/or correlated with the image of the object.

Method and system for optical coherence tomography

A method and corresponding system for optical coherence tomography includes optical coherence tomography equipment that acquires at least two two-dimensional initial images of an object in planes of the object that are spaced apart from one another, in particular running parallel to one another, wherein the initial images each include a plurality of initial image values. In order to assure an examination of the object in the case of medical applications that is as reliable as possible, an interpolation of the initial image values of the at least two two-dimensional initial images is performed in three-dimensional space, wherein interpolation values are obtained that form a two-dimensional final image.

Method and system for optical coherence tomography including obtaining at least two two-dimensional images of an object in three-dimensional space

A method and a corresponding system for optical coherence tomography acquires a first image in a region of a first plane of an object by optical coherence tomography equipment, and the first image is displayed on a display device. To facilitate a reliable and time-saving examination with straightforward handling, a second plane of the object is selected on the basis of the first image that is displayed on the display device, wherein the second plane of the object is different from the first plane of the object, and a second image is acquired in the region of the selected second plane of the object by the optical coherence tomography equipment.

The present invention relates to a device and a corresponding method having a light source () for emitting light, an interferometer (), into which light emitted by the light source () is injected, for irradiating a sample () with light, and a, in particular spatially resolving, detector () for detecting interference patterns obtained by superimposing the light reflected from the sample () with a partial beam of the light injected into the interferometer () which is reflected at a reference mirror () of the interferometer (). In order to obtain OCT images in the simplest way possible and with the highest possible resolution and image quality, the light source () comprises a radiation source () for generating spatially incoherent light, and an optical filter () with a bell-shaped or Gaussian-shaped spectral filter characteristic for filtering the light generated by the radiation source ().

System and method for optical coherence tomography

The invention relates to a system for optical coherence tomography having an interferometer () which has a beam splitter (), a reflector (), an illumination arm (), a specimen arm () and a reference arm (). In order to increase the compactness of the system with at the same time a high image quality a specimen objective is provided in the specimen arm () of the interferometer () by means of which light is focussed into a focus lying in or on the specimen (). Moreover, in the reference arm () of the interferometer () a reference objective is provided by means of which light is focussed onto the reflector (). The optical properties of the specimen objective differ from the optical properties of the reference objective.

System for optical coherence tomography with different optical properties of specimen and reference objectives

The invention relates to a system and a corresponding method for optical coherence tomography having at least one interferometer for emitting light with which a specimen is irradiated, a specimen arm comprising a specimen objective by means of which light emitted by the interferometer is focused in a focus lying within the specimen, a detector for collecting light which is reflected by the specimen, and a control unit for controlling the system such that during the collection alight, which is respectively reflected at different depths of the specimen, the imaging properties of the specimen objective are changed.

System and method for focus tracking optical coherence tomography

The invention relates to a system and to a corresponding method for optical coherence tomography having an interferometer () for emitting light with which a specimen () is irradiated, the interferometer () comprising a beam splitter () and at least one reflector () the optical distance (I) of which from the beam splitter () is changeable, and a detector () which has a plurality of detector elements arranged in an area by means of which the light which is reflected by the specimen () is collected. In order to simplify and speed up the recording of three-dimensional images of the specimen () provision is made such that the optical distance (I) between the reflector () and the beam splitter () is changed by an optical path (L) which is substantially greater than an average wavelength (&#x3bb;) of light () which is injected into the interferometer (): L&#x3e;&#x3e;&#x3bb;, during the change of the optical distance (I) between the reflector () and the beam splitter () by the optical path (L) the light reflected by the specimen () being collected a number of times by the detector elements of the detector (), by means of which the light reflected by a number of two-dimensional sections at different depths of the specimen () is collected.

The invention relates to a system and to a corresponding method for optical coherence tomography having an interferometer () which has a beam splitter (), a first reflector () and a reflector () the optical distance (I) of which from the beam splitter () is changeable by a speed (v), and a detector () for collecting light which is reflected by a specimen () to be examined. In order to reduce the times required for the most reliable possible recording of interference patterns, provision is made such that the intensity of the light (or) injected into the interferometer () or emitted by the interferometer () is modulated with a modulation frequency (f) which is not equal to the Doppler frequency (f), the Doppler frequency (f) being given by twice the ratio of the speed (v) of the change of the optical distance (I) between the reflector () and the beam splitter () to the average wavelength (&#x3bb;) of the injected light ():=2.

The invention relates to a system and to a corresponding method for optical coherence tomography having an interferometer () for emitting light with which a specimen () is irradiated, the interferometer () comprising a beam splitter () and at least one reflector () the optical distance (I) of which from the beam splitter () can be changed by an optical path (L), and a detector () with a first number of detector elements arranged in a first area for collecting light which is reflected by the specimen (). In order to be able to record images of a specimen, in particular in real time, more simply and quickly, the system is operated in a first mode in which light reflected by the specimen () is only collected by a second number of detector elements of the detector () and converted into corresponding detector signals, the second number of detector elements being smaller than the first number of detector elements.

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Munich, Germany

Rainer Nebosis