Abstract: The present invention relates to a method as well as a corresponding system for optical coherence tomography in which by means of an optical coherence tomography equipment at least two two-dimensional initial images (S) of an object are acquired in planes of the object that are spaced apart from one another, in particular running parallel to one another, wherein the initial images each comprise 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 (S) is performed in three-dimensional space, wherein interpolation values are obtained that form a two-dimensional final image (S?).

Abstract: The invention relates to an X-ray cassette (42, 50, 78, 82) for a phosphor storage plate (20), having two openings (14, 44) for inserting the phosphor storage plate (20) into the X-ray cassette (42, 50, 78, 82) and for withdrawing the phosphor storage plate (20) arranged in the X-ray cassette (42, 50, 78, 82) from the cassette. Two flaps (18, 48, 54, 80, 84) are also provided for closing the two openings (14, 44). The invention also relates to a system (10) comprising said type of X-ray cassette (42, 50, 78, 82) and a reading out device (34) for reading out the phosphor storage plate (20) arranged in the X-ray cassette (42, 50, 78, 82). The reading-out device (34) comprises a feeding element (32) for feeding the X-ray cassette (42, 50, 78, 82) into the device. Said feeding element (32) is designed in such a manner that if the X-ray cassette (42, 50, 78, 82) is fed into the feeding element with one of its openings (14), the other opening (44) of the X-ray cassette (42, 50, 78, 82) is accessible to an operator.

Abstract: A method for canceling the impact of the physical property variability on the image quality performance of a digital imaging system, obtained during quality control (QC) analysis using a serial numbered quality control (QC) target by applying physical property deviation controlled behavior model corrections to the raw image quality performance. The serial numbered QC-target used for the QC analysis comprises target-specific, measured physical property data encoded in- or outside of QC-target.

Abstract: A computer implemented method for defining a breast window within an image for a breast, said image containing a breast image having a breast boundary, the method comprising: identifying a center region of the breast image, where the center region is coincident with an edge of the image; defining the edge of the image as the first border of the breast window; searching from the center region along the edge of the image for the breast boundary, the breast boundary informing a second border of the breast window; searching from the center region along the edge of the image in an opposite direction for the breast boundary, the breast boundary informing a third border of the breast window; and repeatedly searching from the center region in a direction orthogonal to the edge of the image for a point on the breast boundary most distant from the edge of the image, the point on the breast boundary informing a fourth border of the breast window.

Abstract: 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 focussed 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.

Abstract: Method of generating a radiation image of an elongate body by taking plural partial X-ray images on a digital radiography detector using a multiple shot exposure technique. Partial image dimensions are determined so that the partial image representing that part of the elongate body that is most susceptible of movement during the multiple shot exposure is recorded covering an as large as possible area of the detector.

Abstract: A method and to a corresponding apparatus reads out X-ray information stored in a storage phosphor plate (1), the storage phosphor plate (1) being irradiated with stimulation light (3) and so being stimulated into emitting emission light which is collected by a detector (9) during several measuring times and being converted into corresponding emission light signals (S, R). In order to guarantee high reliability when examining sensitivity fluctuations, in particular with different types of detectors, provision is made such that reference measurements are taken by the detector (9) during several reference measuring times and several reference signals are thus produced, the individual reference measuring times falling respectively between the measuring times, and the reference signals being used for examining the sensitivity of the detector (9) to emission light.

Abstract: The present invention relates to a device and a corresponding method having a light source (20) for emitting light, an interferometer (10), into which light emitted by the light source (20) is injected, for irradiating a sample (1) with light, and a, in particular spatially resolving, detector (40) for detecting interference patterns obtained by superimposing the light reflected from the sample (1) with a partial beam of the light injected into the interferometer (10) which is reflected at a reference mirror (16) of the interferometer (10). In order to obtain OCT images in the simplest way possible and with the highest possible resolution and image quality, the light source (20) comprises a radiation source (21) for generating spatially incoherent light, and an optical filter (22) with a bell-shaped or Gaussian-shaped spectral filter characteristic for filtering the light generated by the radiation source (21).

Abstract: Method and apparatus for generating an x-ray image of an elongate body in direct radiography by generating a plurality of partial x-ray images of said elongated body and by stitching these partial images.

Abstract: The invention relates to a system and to a corresponding method for optical coherence tomography having an interferometer (10) for emitting light with which a specimen (1) is irradiated, the interferometer (10) comprising a beam splitter (13) and at least one reflector (12) the optical distance (I) of which from the beam splitter (13) can be changed by an optical path (L), and a detector (30) with a first number of detector elements arranged in a first area for collecting light which is reflected by the specimen (1). 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 (1) is only collected by a second number of detector elements of the detector (30) and converted into corresponding detector signals, the second number of detector elements being smaller than the first number of detector elements.

Abstract: A method to extract irradiation field areas in an X-ray image represented by a digital signal representation comprising the steps of segmenting the image in multiple regions of pixels which have similar local image characteristics, fitting line segments to the boundaries of these regions whereby said line segments correspond with candidate irradiation field boundaries and constitute a segmentation map, classifying regions in said segmentation map into at least two classes, one class being irradiation field and the other class being collimated region on the basis of at least one of local, regional and global image characteristics.

Abstract: Method of removing the spatial response signature of a detector from a computed radiography image by adaptively filtering and spatially warping the characteristic response signature of the detector prior to demodulation.

Abstract: In a method and a system for optical coherence tomography, light, with which a specimen (1) is irradiated, is emitted by an interferometer (10), which comprises a beam splitter (13) and a reflector (12). Light reflected by the specimen (1) is collected by a detector (11), and the reflector (12) is brought into a number of positions at different optical distances away from the beam splitter (13). To record images of a specimen (1) easily and quickly, with high quality, the light reflected by the specimen (1) is collected a number of times by the detector (11) and converted into corresponding detector images, while the reflector (12) in the respective position is in the rest position. An averaged detector image is obtained for each position. A tomogram is generated from the averaged detector images obtained for the different positions of the reflector (12).

Abstract: The present invention relates to an apparatus and to a corresponding method for reading out X-ray information stored in a storage phosphor layer (1) comprising a light source (2) for generating a stimulation light beam (3) which can stimulate the storage phosphor layer (1) to emit emission light, and a deflection element (4) for deflecting the stimulation light beam (3) in such a way that the deflected stimulation light beam (3?) is moved over the storage phosphor layer (1). In order to achieve the highest possible quality of the X-ray image obtained in the simplest and most cost-effective way possible, a drive device (5) is provided for driving the deflection element (4) by delivering drive energy to the deflection element (4) dependently upon a location of the deflected stimulation light beam (3?) and/or dependently upon a position, in particular an angular position, of the deflection element (4).

Abstract: The invention relates to a system and to a corresponding method for optical coherence tomography having an interferometer (10) for emitting light with which a specimen (1) is irradiated, the interferometer (1) comprising a beam splitter (13) and at least one reflector (12) the optical distance (I) of which from the beam splitter (13) is changeable, a specimen objective by means of which light emitted by the interferometer (10) is focussed in a focus lying within the specimen (1), and a detector (30) for collecting light which is reflected by the specimen (1).

Abstract: A method of generating a multiscale contrast enhanced image is described wherein the shape of edge transitions is preserved. Detail images are subjected to a conversion, the conversion function of at least one scale being adjusted for each detail pixel value according to the ratio between the combination of the enhanced center differences and the combination of the unenhanced center differences. Several adaptive enhancement measures are described.

Abstract: A method of server site rendering 3D images on a server computer coupled to a client computer wherein the client computer instructs a server computer to load data for 3D rendering and sends a stream of rendering parameter sets to the server computer, each set of rendering parameters corresponding with an image to be rendered; next the render computer renders a stream of images corresponding to the stream of parameter sets and the stream of images is compressed with a video compression scheme and sent from the server computer to the client computer where the client computer decompresses the received compressed video stream and displays the result in a viewing port. The rendering and communication chain is subdivided in successive pipeline stages that work in parallel on successive rendered image information.

Abstract: A basic component of Computer-Aided Detection systems for digital mammography comprises generating candidate mass locations suitable for further analysis. A component is described that relies on filtering either the background image or the complementary foreground mammographic detail by a purely signal processing method on the one hand or a processing method based on a physical model on the other hand. The different steps of the signal processing approach consist of band-pass filtering the image by one or more band pass filters, multidimensional clustering, iso-contouring of the distance to centroid of the one or more filtered values, and finally candidate generation and segmentation by contour processing. The physics-based approach also filters the image to retrieve a fat-corrected image to model the background of the breast, and the resulting image is subjected to a blob detection filter to model the intensity bumps on the foreground component of the breast that are associated with mass candidates.

Abstract: At least one of two enhancement methods for changing contrast and/or density are applied to an image. According to a first enhancement method the window width/level settings of the image are modified and according to a second enhancement method density and contrast of the image are modified by modifying a multi-scale representation of the image whereby modification is derived from at least two gradient functions determined at different scales, a gradient function at a specific scale specifying the dependency of contrast amplification at said scale as a function of density. The amount of modification obtained by applying either of said first and second enhancement methods is determined by the amount of movement of at least one indicium.

Abstract: A method and a corresponding apparatus for determining a position in an image, in particular a medical image enables a reliable determination of positions of interest in images of a variety of structures by displaying a volume rendering of image data acquired from an object, in particular a patient, pointing at a structure of interest displayed in the volume rendering of the image data, generating a viewing ray profile comprising information characterizing a ray running through said structure of interest, selecting a contextual profile from various contextual profiles, each of said contextual profiles comprising a representative ray profile representing a viewing ray profile of a structure, in particular an anatomical structure, and comprising profile information, and determining a position within said structure of interest based on said profile information of said selected contextual profile in the case that the representative ray profile of said selected contextual profile is matching with at least a part o