Abstract: The invention relates to a ring electrode for a slip ring for transmitting electrical energy between machine parts, of which at least one machine part can be rotated in relation to another machine part. The ring electrode and corresponding slip ring can be economically produced and have low wear. The electrode is made of a rod material made of stainless steel, which is rolled into a ring and the free ends of the ring are brought together to form a closed ring.

Abstract: The invention relates to an antenna structure for the wide-band transmission of electrical signals, which has a stripline and a probe that can be capacitively or inductively coupled to the stripline, wherein the stripline and the probe are arranged so as to be movable in relation to each other within a specified distance range between the probe and the stripline in the longitudinal direction of the stripline such that electrical signals can be transmitted between the stripline and the probe without contact, wherein the stripline comprises at least one strip electrode facing the probe, a reference electrode, and a dielectric carrier material located between the strip electrode and the reference electrode.

Abstract: The invention relates to a ring electrode for a slip ring for transmitting electrical energy between machine parts, of which at least one machine part can be rotated in relation to another machine part, a corresponding slip ring, and a method for producing a corresponding ring electrode. In order to create a ring electrode and a corresponding slip ring, and a method for producing said ring electrode, which ring electrode and corresponding slip ring can be economically produced and have low wear, the electrode according to the invention is made of a rod material made of stainless steel, which is rolled into a ring and the free ends of which are brought together to form a closed ring.

Abstract: The invention relates to an antenna structure for the wide-band transmission of electrical signals, which has a stripline and a probe that can be capacitively or inductively coupled to the stripline, wherein the stripline and the probe are arranged so as to be movable in relation to each other within a specified distance range between the probe and the stripline in the longitudinal direction of the stripline such that electrical signals can be transmitted between the stripline and the probe without contact, wherein the stripline comprises at least one strip electrode facing the probe, a reference electrode, and a dielectric carrier material located between the strip electrode and the reference electrode.

Abstract: A sliding contact assembly comprises: at least one contact slide track; a brush holder for holding at least one brush contact member and maintaining the at least one brush contact member in sliding contact with the at least one contact slide track during relative movement between the brush contact member and the contact slide track; and a collecting container disposed to collect particles of abraded material from the at least one brush contact member; wherein a cover is provided to surround substantially the brush holder and the at least one brush contact member, the cover having walls extending along a direction of the contact slide track laterally of the brush holder and the brush contact member and along a side of the brush holder remote from the contact slide track; the collecting container is disposed at a downstream end of the cover; and the cover is designed to channel a stream of air, generated within the cover by movement of the contact slide track, towards the collecting container.

Abstract: An X-ray apparatus includes an X-ray source and a detector operating in conjunction with the X-ray source. The X-ray apparatus also includes a correction object having a defined geometry and/or known radiation absorption behavior disposed between the X-ray source and the detector. The correction object is detectable by the detector and configured to indicate characteristics of the X-ray source such as a focal spot position.

Abstract: The invention relates to a device and a method for transmitting digital signals between at least two units disposed to move relative to each other. By combining information signals with random signals, the spectral power density of a signal is reduced for the same transmission power. The device can include a data transmitter, pseudo random generator or random generator, and a combining unit for combining the output from the transmitter with the output from the generator. The combined result is sent across a transmission path where it is received by a data receiver. The receiver has a combining unit for receiving the combined result compared to a second pseudo random or random generator output for recreating the original transmitter output.

Abstract: An optical fiber sensor has a measurement path and a reference path. Both paths each consist of two optical fibers and are fed with modulated light. The fibers of the reference path have a predefined difference in length, whereas the fibers of the measurement path are the same length. All fibers are at approximately the same temperature. An evaluation circuit determines the phase differences in each case between the fibers of the measurement path and of the reference path. A measurement value calculated from the phase differences is then output.

Abstract: A method and a device are provided for reworking or re-machining the surface and, in particular, the slide tracks of a slip ring while the slip ring is in a built-in state in an appliance or machine using the slip ring. The slip ring is rotated by a drive provided in the appliance for rotating the slip ring during normal operation, or by an auxiliary drive, while a surface-removing cutting tool or surface deforming tool held in a tool holder or carrier adapted to be attached to the appliance or machine is applied to the surface of the moving slip ring to re-machine or recondition the surface. The invention avoids the necessity of dismantling the appliance or machine for the purpose of removing the slip ring for repairs.

Abstract: A method is provided for determining a position of an object within a breast of a female patient in a simple manner from a three-dimensional image taken of the breast. A simplified model is made of an internal structure of a breast having glandular bodies leading via lactiferous ducts to an outlet at a nipple. A particularly advantageous model is a tree-type structure in which branches correspond to lactiferous ducts and leaves correspond to glandular bodies. Furthermore, a determination is made of whether the object has contact with an element of the tree-type structure. Alternatively, a distance to an element of the tree-type structure is established. By correlating tree-type structures derived from various images taken on the same breast, the location of the object can be unequivocally established.

Abstract: A device is provided herein for locating a breast of a female patient. In one embodiment, the locating device is adapted to be inserted into an opening within a patient table. The locating device is further adapted with different sizes and shapes, and thus, can be adapted to various breast shapes. In one embodiment, the device is provided with an RFID transponder for identifying the particular locating device being used. The RFID transponder enables data about the locating device to be automatically recorded along with the image data. This enables the shape of the locating device to be taken into account when evaluating an image. Furthermore, the RFID transponder ensures that a locating device of the same shape is used for subsequent exposures of a patient's breast, so that the exposures remain comparable.

Abstract: An X-ray detector for recording an image of an object that is moving relative to the detector includes a plurality of detector modules which are adjacently disposed so that they partially overlap. Using the detector modules, a TDI (Time Delayed Integration) is performed within each detector module. Subsequently an evaluation unit determines corrected measurement values of an overlap region by adding the measured values from the individual detector modules in the overlap region.

Abstract: An X-ray machine for monitoring thermal treatment of human tissue produces a reference exposure of the tissue to be treated prior to commencement of the treatment. Thermal treatment is performed subsequently. Check exposures are made with the X-ray machine during the treatment or also during treatment intervals. The check exposures are performed as partial volume exposures at a lower radiation load than the reference exposures. From a comparison of check exposures with the reference exposures, conclusions can be drawn concerning changes of tissue temperature and also tissue properties.

Abstract: An X-ray machine for imaging a female breast has a support with an attached continuously rotatable gantry. An X-ray tube with an oppositely located X-ray detector is mounted on the gantry. A locating means for accommodating a breast is disposed coaxially with a rotation axis of the gantry. The gantry is adapted to be moved relative to the locating means by an advancing means. In order to achieve a high throughput of patients, a locating means having an opening for accommodating a breast is provided relative to both sides of the gantry. The X-ray machine may be incorporated between two separating walls which have cut-out portions for the locating means.

Abstract: An X-ray machine, which in one embodiment is based on a spiral CT scanner, is used for examining a breast of a female patient. The X-ray machine has a gantry, which is adapted for rotation about a rotational axis, and simultaneously, for movement in a direction parallel to the rotational axis. A cylindrical imaging region is scanned along a spiraling path provided by the gantry. The patient is positioned so that a breast to be examined projects into the imaging region. A sample receptacle located in the imaging region is adapted to accommodate a tissue sample and/or a reference material. A range of movement of the gantry is dimensioned, so that the breast and/or the contents of the sample receptacle can be imaged with the gantry.

Abstract: An X-ray machine for imaging a breast of a female patient includes a patient table for accommodating the patient, an X-ray tube and an X-ray detector. In one embodiment, the X-ray machine may be designed as a spiral CT scanner having a rotatable gantry on which the X-ray tube and detector are mounted. The X-ray detector is inclined with respect to the X-ray tube, so that a central ray of a beam of rays emitted from the X-ray tube is perpendicularly incident on an active face of the detector. In one embodiment, the detector may be designed with a curvature, which reduces image artifacts by reducing path length differences between the central ray and the outer rays of the beam. This configuration provides particularly space saving X-ray machines, which at the same time, are of particularly high resolution.

Abstract: An X-ray machine for imaging a breast of a female patient comprises a gantry with an X-ray tube and an X-ray detector, and a horizontally disposed patient table with a cut-out portion for accommodating a breast of the patient. The gantry is rigidly mechanically suspended from the patient table. The gantry is adapted to rotate about an approximately vertical rotational axis in continuous rotational movement for imaging the breast. The gantry is also adapted to be moved in a vertical direction during said the rotational movement.

Abstract: A phantom for examination in nuclear spin tomographs comprises at least one test body for abstract imitation of a human or animal body part, and also means for supplying the test body with a liquid during the examination by nuclear spin tomography. Another phantom for examination in nuclear spin tomographs comprises at least one abstract imitation of a human or animal body part, of which at least one abstract imitation is adapted to be an at least partially flexible test body, and a flexible layer surrounding the partially flexible test body to imitate a lipid layer. Methods for producing test bodies include molding the test bodies from plastic material.

Abstract: A tracking unit for solar collectors has at least two panels, which can each be pivoted about a longitudinal axis. The axes are arranged on a rotable frame on one plane. The position of each axis within the individual panels is offset by a offset ?x in relation to the adjacent panels. The individual panels are moved by means of a lifting mechanism that pivots each of the panels about the same angle. This arrangement significantly reduces mutual shading and increases efficiency by about 10%.

Abstract: An inductive component in the form of a balun for use in magnetic resonance imaging tomographs comprises a winding of a coaxial line. For adjusting inductance of the winding, a length of the winding of the coaxial line is deformable. For this, a first end of the coaxial line is fastened to a first fastening block, and a second end to a second fastening block. Change of the length is effected by means of an adjusting screw which varies the distance between the two fastening blocks.