Abstract: An X-ray diagnostic installation has an X-ray tube, a voltage generator, a planar solid state X-ray image converter for generating raw images, an image system and a playback device. The image system has a device for offset correction that acquires an offset image and stores it in a correction offset memory. The correction offset memory is preceded by a microphony detector that analyzes the current offset image for disturbances due to microphony and allows storage only of a current offset image, that is free of such disturbances.

Abstract: In a method for the operation of a magnetic resonance apparatus an anatomical image of a region of an examination subject to be imaged is generated with a prescribable resolution and quality, a functional image of the region to be imaged is generated, the functional image is superimposed on the anatomical image, and at least one area of the region to be imaged wherein the functional image contains unreliable information is identified in the superimposition.

Abstract: A print image, such as for a franking apparatus, is composed of a number of elements to which different security levels are assigned. In a storage medium, and in a franking apparatus containing such a storage medium, for the print image, the image data are stored in a manner allocated to respectively different security levels.

Abstract: A ferrite core, such as for transformers, has a middle bleb with an oval cross-section or flattened oval cross-section, whereby the longitudinal axis of the middle bleb is oriented parallel to the attachment plane of the transformer and the longest axis of the oval cross-section or flattened oval cross-section is oriented vertically to this attachment plane. The core is symmetrically structured with respect to a mirror plane, which contains the longitudinal axis of the ferrite core and which resides vertically to the attachment plane, and is particularly low in distortion.

Abstract: An implantable heart stimulator comprises a pulse generator (3) for delivering stimulation pulses to the heart of a patient. An IEGM means (5) registers electric signals associated with the patient's heart. A classifier means (6) classifies received electric IEGM signals according to their waveforms in at least one segment of the cardiac cycle, and a control means (4) controls the pulse generator depending on the classification of the IEGM signals. A first filtering means is provided to extract parameters related to the patient's respiration from beat-to-beat variability in the IEGM signal classification while filtering away slow classification variability extending over several cardiac cycles. The control means is adapted to receive the respiration-related parameters to control the delivery of stimulation pulses from the pulse generator depending on these parameters.

Abstract: In a method for operating a magnetic resonance apparatus, and a magnetic resonance apparatus for implementing the method, the magnetic resonance apparatus having a gradient system containing at least one gradient coil for generating a gradient field at least within an imaging volume, and at least one shield coil operable independently of the gradient coil for generating a shielding field with which the gradient field can be neutralized in a prescribable region, the gradient system is operated in an operating mode wherein the shield coil is operated for intensifying the gradient field within the imaging volume.

Abstract: In order to strip a film-like coating having toner residues, abrasion and paper dust from an intermediate carrier (for example, a photoconductor), a cleaning unit is provided that is planarly executed and bent such that first and second surfaces and a rounded-off bending region arise. The cleaning unit has its first surface arranged parallel to the intermediate carrier such that the coating runs through under the bending region and then between the first surface and the intermediate carrier, so that the toner contained in the coating loosens the coating from the intermediate carrier.

Abstract: A duplexer/diplexer comprising at least a transmission branch and a reception branch. The transmission branch and the reception branch are modularly connected by shielding, and are arranged such that the two branches are matched to an identical value of resistance (50 Ohms) in their passband, and offer broadband high-impedance in the stopband of the band neighboring the passband. As a result, all three ports of the duplexer/diplexer are matched to the same value of resistance given parallel connection of the two branches.

Abstract: A patient ventilator system has a high-frequency oscillation ventilator connectable to a patient circuit and operable to induce oscillations within gas in the circuit at a predetermined high-frequency and a gas supply connectable to the patient circuit for supplying breathing gas thereto. A detection device is also included within the ventilator system and is adapted to monitor during the operation of the high-frequency oscillator ventilator, gas pressure and/or gas flow to detect a variation therein not derived from the induced high-frequency oscillations and to output a trigger signal dependent on the detected variation indicating a spontaneous breathing effort. The gas supply is operable on receipt of the trigger signal to supply breathing gas into the circuit at a level to assist the spontaneous breathing effort.

Abstract: In a method and apparatus for monitoring the composition of a breathing gas mixture having a first gaseous component and a second gaseous component, a data processor is supplied, either as an input value or as a measured value from associated humidity sensors with an indication of a moisture content value (RHComp1) for the first gaseous component and a moisture content value (RHComp2) second gaseous component before mixing. An indication of the moisture content value for the mixture (RHMix) is measured and provided to the data processor. From these inputs the data processor determines a value indicative of the amount (x,y) of one or both of the first gaseous component and the second gaseous component in the mixture according to the relationship: RHComp1·x+RHComp2·y=RHMix.

Abstract: The resonant frequency of a device is determined by energizing the device with a short burst of energy to produce a decaying sinusoidal output, determining coefficients of a linear difference equation characterizing the decaying sinusoidal output by use of a least-mean-square fit, and determining the resonant frequency from the coefficients. The Q of the device can be determined from a decay parameter of the envelope of the decaying sinusoidal output and from the resonant frequency.

Abstract: A head coil for a magnetic resonance apparatus has a mirror device for the stimulation of one or both eyes with first light in a first wavelength range and for simultaneous acquisition of a eye movement with second light in a second wavelength range in a functional magnetic resonance examination. The mirror device has a mirror that reflects the first light and is transmissive for the second light or that is transmissive for the first light and reflects the second light.

Abstract: Display Element for Employment in a Magnetic Anti-theft Security System A semi-hard magnetic alloy for activation strips in magnetic anti-theft security systems is disclosed that contains 8 to 25 weight % Ni, 1.5 to 4.5 weight % Al, 0.5 to 3 weight % Ti and balance iron. The alloy is distinguished over known, employed alloys by excellent magnetic properties and a high resistance to corrosion. Further, the inventive alloy can be excellently cold-worked before the annealing.

Abstract: In a visualization system and method for visualization of data that relate to a medical intervention at a patient, a surgeon has no visual contact with a surgical instrument but can visualize in the form of a projected geometrical shape by a visualization device, the geometrical shape corresponding to the position and orientation of the surgical instrument onto the body surface of the patient under which the surgical instrument is located with a characteristic of the geometrical shape indicating the distance of the surgical instrument from the body surface.

Abstract: A process and circuit for a printer or copier has control data loaded into a working memory of a control unit. The control data is compared to predetermined values which correspond to a predetermined acceptable control data range. An error signal is generated when the control data is outside the acceptable range.

Abstract: An apparatus for the implementation of a physiologically controlled measurement at a living subject has a signal acquisition arrangement for acquiring a physiological signal of the subject, a display for the graphic display of a time curve of the physiological signal, and a time-setting arrangement for setting at least one relative point in time that is referenced to the time curve of the physiological signal and that is to be employed for the control of the time sequence of the measurement. The display is configured for also graphically displaying the at least one relative point in time in its temporal relationship to the physiological signal, particularly by mixing at least one time bar in the displayed image. Quick visual monitoring of the relative points in time that are set is thus possible.

Abstract: In a method for operating a magnetic resonance apparatus with a gradient coil system and an active shim system, shim currents of the active shim system and/or offset currents of the gradient coil system are adjusted corresponding to at least one subject-specific parameter of an examination subject.

Abstract: In a method for digital rastering of a half-tone image with rasters having arbitrary screen widths and screen angles, the rastering occurs by reading out a threshold matrix and comparing the thresholds that are read out to the color values of the half-tone image. For that purpose, a threshold matrix is employed wherein the thresholds represent one or more raster dots of a raster arranged at an angle, the desired screen width and the desired angle being approximated therewith. During the readout of the thresholds, an error between the desired raster and the raster approximated by the threshold matrix is calculated, and the error is compensated by a correction of the readout address for the threshold matrix as soon as the error exceeds a predetermined limit value. Alternatively, stored bit patterns can be employed instead of the threshold matrix, these having been acquired by comparing the tonal values to be reproduced to a threshold matrix.

Abstract: An electronic component such as a surface acoustic wave component has a chip a piezoelectric substrate with electrically conductive structures thereon and a base plate having external electrical terminal elements that are contacted to the electrically conductive structures of the chip. A protective film is applied onto the chip surface carrying the electrically conductive structures. The surface of the protective film facing away from the piezoelectric substrate carries electrical contact elements that are connected, to the electrically conductive structures of the chip via through-contacts in the protective film and/or directly via bumps, as well as to the electrical terminal elements of the base plate.

Abstract: In a method for operating a magnetic resonance device, a magnetic resonance signal is recorded over a span of time, and in order to produce a magnetic resonance spectrum, the magnetic resonance signal in the time domain is subjected to a Fourier transformation. The magnetic resonance signal is weighted with a bell-shaped window function before the Fourier transformation, thereby preventing broadening of resonance lines in the displayed frequency spectrum, so that non-dominant resonance lines, such as those associated with the metabolites, can be more readily analyzed.