Abstract:
In a method and device for displaying an area to be medically examined or treated, first and second image data sets are respectively acquired with first and second different imaging modalities, and the first and second image data sets are brought into geometrical registration with each other. The first data set is displayed, and a selected segment is identified therein. Corresponding data in the second image data set are then determined, based on the registration between the two data sets, and the corresponding segment in the second data set is superimposed on the displayed first image data set, overlying the selected segment therein. The second image data set is displayed so as to be rotatable around its image center.
Abstract:
A mammography device for examining a breast has a support plate and a compression plate, between which the breast is positioned and compressed during a radiographic examination. An ultrasound transducer for obtaining a sonogram of the breast is brought into direct contact with the breast either by temporary mounting in one of the support plate or the compression plate or by exchanging one of the compression plate or the support plate with another plate that contains the ultrasound transducer.
Abstract:
A tip of an elongate device is navigated into a particular tissue volume in order to examine the particular tissue volume in a body and part of the tissue volume is analyzed in real-time by way of a biosensor. In at least one embodiment, in the process, either the biosensor can be arranged on the tip of the device or the device includes a catheter, by which a substance to be analyzed is transported out of the tissue volume from the tip to the biosensor arranged at the proximal end of the catheter.
Abstract:
In a method and apparatus for displaying an x-ray image acquired in a mammographic examination wherein the breast was compressed to a compression thickness, a breast area of the breast in an image area of the x-ray image is determined, and the glandular density of the breast area is determined from brightness levels of the x-ray image in the image area and from the compression thickness. A value that characterizes the glandular density is displayed together with the x-ray image.
Abstract:
An in vitro method is for diagnosing a tumor disease in a patient. In at least one embodiment, the method includes: (i) determining an IVD marker or an IVD marker panel in at least one biological sample of a patient, wherein the IVD marker has a high sensitivity to the tumor disease, (ii) determining the proportion of patients tested positive due to an adapted reference range of the IVD marker/IVD marker panel, wherein the reference range was adapted such that the number of individuals with false negative tests, the number of individuals with false positive tests and the number of individuals ultimately needing to be subjected to imaging diagnostics to clarify false negative and false positive results are balanced in respect of one another such that tumor screening can be carried out, possibly: (iii) deciding to carry out an imaging method specific to the respective tumor disease for clarifying possible false negative and/or false positive IVD results, or (iv) repeating stages (i) and (ii) after a defined time interval, or (v) carrying out an imaging method for imaging the tumor.
Abstract:
An improvement in image quality when determining an image using iterative reconstruction is provided by taking account of focus shifts. In order to take into consideration the influence of focus shift in calculated projections, several different projections are calculated for each section of the focus path on a section-by-section basis. The several different calculated projections for a section are averaged for comparison with a projection recorded in the section. Improved image quality is provided, for example, in tomosynthesis applications in which a large number of recordings are made with a stationary detector.
Abstract:
In a method and system for monitoring the power state of an x-ray emitter and/or an x-ray detector, the x-ray emitter is operated according to a set of test parameters, so as to emit x-rays that strike at least a portion of the detector region of the x-ray detector. At least one value characterizing the operation of the x-ray emitter and/or the x-ray detector is determined, and this detected parameter is compared with a comparable reference parameter value. The power state of the x-ray emitter and/or the x-ray detector is determined based on deviation of the detected parameter from the reference parameter.
Abstract:
A method and a measurement system are disclosed for the noninvasive determination of properties of an object to be examined and to the use of a contrast medium for X-ray phase-contrast measurement. in at least one embodiment of the invention, a mixture (suspension) consisting of a base liquid and a multiplicity of particles contained therein is used, the refractive index of the base liquid being different to the refractive index of the particles.
Abstract:
A method and a measurement system are disclosed for the noninvasive determination of properties of an object to be examined and to the use of a contrast medium for X-ray phase-contrast measurement. in at least one embodiment of the invention, a mixture (suspension) consisting of a base liquid and a multiplicity of particles contained therein is used, the refractive index of the base liquid being different to the refractive index of the particles.
Abstract:
In a tomosynthetic image reconstruction method and diagnostic device operating with such a method, a tomosynthetic 3D x-ray image is reconstructed by a discrete filtered back projection from a number of individual digital projection data recorded from different project angles within a restricted angular range, in which at least one filtering is performed with a convolution kernel that, in the local area outside of its central value, corresponds to an exponential function.