Abstract: A gradient system according to the invention generates three superimposed gradient fields of which at least one of the three gradient fields is not unique in space (i.e. not bijective) and at least one of the three gradient has areas of the same field strength, which extend in parallel or orthogonally to a approximately U-shaped center plane of the teeth of one jaw of a patient.

Abstract: A gradient system according to the invention generates three superimposed gradient fields of which at least one of the three gradient fields is not unique in space (i.e. not bijective) and at least one of the three gradient has areas of the same field strength, which extend in parallel or orthogonally to a approximately U-shaped center plane of the teeth of one jaw of a patient.

Abstract: In a method for contrast agent-free magnetic resonance colonography, blood that flows into the bowel tissue is prepared automatically by radio-frequency pulses. Magnetic resonance data of the bowel are acquired while the prepared blood is located in the bowel, and a magnetic resonance image of the bowel is created from the magnetic resonance data. Bowel tissue regions and regions with bowel content are differentiated automatically on the basis of an increased contrast (caused by the preparation) between perfused tissue regions and regions of the gut lumen that are not perfused.

Abstract: A method and an apparatus for virtual bowel cleaning are disclosed. A first CT volume data record of an area of the bowel of interest is produced, in which voxels relating to a bowel content are identified and are suitably modified in order to obtain a modified data record without visible bowel contents, which is then visualized. In at least one embodiment of the method, at least one further volume data record is produced of the area of interest, which was recorded by a CT scanner with a different spectral distribution than the first volume data record which was recorded by a CT scanner, with at least some of the voxels relating to the bowel content being identified on the basis of information about a local density and/or atomic number, which is obtained from data in the first and the further volume data record taking account of the different spectral distributions. In at least one embodiment, the method and the apparatus make it possible to increase the reliability of virtual bowel cleaning.

Abstract: In a method for operation of an imaging medical apparatus, a recumbent board supporting an examination subject is positioned in the scan region of the medical-technical apparatus, an exposure of both a section of the recumbent board and of a part of the tissue of the examination subject to be examined in the scan region is generated, the acquired real position of the section of the recumbent board is compared with an expected position of the recumbent board by image evaluation of the exposure generated with the medical-technical apparatus, and the exposure generated with the medical-technical apparatus of the examined tissue is corrected using the expected-real comparison of the position of the recumbent board.

Abstract: A physiological sensor system is provided for recording electrical measurement signals in an environment which impairs the recording, in particular in a magnetic resonance instrument, having a plurality of measurement electrodes as well as a signal amplifier device, a power supply and an electronic device for signal conversion and signal transmission to an external signal processing and/or control instrument. The measurement electrodes (3, 4, 5, 14, 15, n) and the signal amplifier device (6, 16) are arranged in a first shielded casing (2, 13), and the power supply and the electronic device being arranged in a second shielded casing (9), the signal amplifier device (6, 16) being connected or connectable to the electronic device and the power supply through a shielded and/or twisted-wire cable connection (7, 17).

Abstract: A physiological sensor system is provided for recording electrical measurement signals in an environment which impairs the recording, in particular in a magnetic resonance instrument, having a plurality of measurement electrodes as well as a signal amplifier device, a power supply and an electronic device for signal conversion and signal transmission to an external signal processing and/or control instrument. The measurement electrodes (3, 4, 5, 14, 15, n) and the signal amplifier device (6, 16) are arranged in a first shielded casing (2, 13), and the power supply and the electronic device being arranged in a second shielded casing (9), the signal amplifier device (6, 16) being connected or connectable to the electronic device and the power supply through a shielded and/or twisted-wire cable connection (7, 17).