Abstract:
The invention relates to a method and a device for analyzing a biological tissue, whereby a luminescence light of a luminescence substance is detected. The aim of the invention is to increase the precision and reliability of the analysis. To this end, a permutation symmetry imbalance is generated in the tissue by a magnetic field, the permutation symmetry imbalance is modified at a pre-determined location by a magnetic alternating field, and the luminescence light is detected according to the pre-determined location.
Abstract:
A method and a measuring arrangement are disclosed for nondestructive analysis of an examination object. In at least one embodiment of the method, x-radiation having a specific energy spectrum is generated by an x-ray source, with the aid of at least one x-ray/optical grating in the beam path of the x-radiation there is generated a standing wave field of this x-radiation that is positioned at least partially in the examination object, and the radiation excited by the x-ray standing wave field in the examination object is measured as a function of at least one relative position between the examination object and the x-ray standing wave field. Further, a material distribution in the examination object is inferred from the measurement result of the radiation excited by the x-ray standing wave field.
Abstract:
A shockwave system for treatment of a patient has a detection unit for detection of an indicator correlated with the calmness of the patient, and a device that is operable dependent on the indicator that increases the calmness of the patient. In a method for operation of a shockwave system for treatment of a patient, an indicator correlated with the calmness of the patient is detected and a measure to increase the calmness of the patient is taken dependent on the indicator.
Abstract:
The invention relates to an instrument able to be introduced into a body as well as an imaging position fixing system and position fixing method for the instrument. A magnet able to be rotated with a rotation drive is provided in an end section of the instrument. The position of the magnet in the body can be determined on the basis of the strength of a magnetic alternating field created by a rotation of the magnet.
Abstract:
The invention relates to a method for monitoring an x-ray apparatus. To prevent the application of a harmful x-ray dose, it is proposed in accordance with the invention to compare a distance value indicating a distance between an x-ray source and a surface of a patient with a predetermined mini-mum distance value and to generate a warning signal, if the distance value is smaller than the minimum distance value.
Abstract:
An X-ray diagnostic device is provided. The X-ray diagnostic device includes a control device that is operable to optimally adjust a radiation of an X-ray emitter for a particular patient, and a measuring device. The measuring device is coupled to the control device. The measuring device is operable to determine a tissue composition of a body part to be examined. The control device is operable to optimally adjust the radiation of the X-ray emitter for the particular patient on the basis of the measured tissue composition.
Abstract:
For flexible and hygienic operation, a medical navigation and positioning system with an operation system is provided for assignment to a medical imaging device, with the navigation and positioning system featuring a positioning facility, a processing unit and an operating instrument, with the position of the operating instrument being able to be located by means of the positioning facility, with the processing unit being embodied for checking the current position of the operating instrument in relation to predetermined positions and, if the position of the operating instrument matches a predetermined position, at least one corresponding operating function of the operation system or of the medical device assigned to the predetermined position being able to be initiated.
Abstract:
A focus-detector arrangement of an X-ray apparatus is disclosed, for generating projective or tomographic phase contrast recordings of a subject. In at least one embodiment, least one grating of a focus-detector arrangement includes, at least partially, a macroscopically homogeneous medium which, when excited by an energy source, assumes a periodic structure/standing wave field that leads to beam splitting and the formation of an interference pattern when the X-ray beam passes through.
Abstract:
A focus-detector arrangement of an X-ray apparatus is disclosed for generating projective or tomographic phase contrast recordings of an observed region of a subject. In at least one embodiment, the arrangement includes a radiation source which emits a coherent or quasi-coherent X-radiation and irradiates the subject, a phase grating which is arranged behind the subject in the beam path of the radiation source and generates an interference pattern of the X-radiation in a predetermined energy range, and an analysis-detector system which detects at least the interference pattern generated by the phase grating in respect of its phase shift with position resolution. Further, the beam path of the X-radiation used diverges in at least one plane between the focus and the detector.
Abstract:
The invention relates to a tomography device (1), especially an X-ray computer tomography device or ultrasound tomography device, comprising a balancing device (23; 45) for reducing an imbalance (61) that was determined by means of the measuring system (2) rotating about an axis of rotation (4). The balancing device (23; 45) comprising means mounted on the measuring system (2) for variably positioning a balancing mass and a control device (25) acting upon said means and designed in such a manner that the balancing mass, controlled by the control device (25), can be positioned in a location appropriate to reduce the imbalance (61). The balancing mass can be configured as a liquid (F) that is positioned in a liquid-tight channel. The invention also relates to a balancing method according to which a mass (m) of a liquid quantity balancing the imbalance (61) is determined and a magneto- and/or electro-rheological liquid (F) is introduced into an annular channel (31; 71; 81, 83, 85) in such a quantity that for the subsequent operation a quantity of liquid (F) dependent on the determined mass (m) is present in the annular channel (31; 71 81, 83, 85).