Abstract: Systems and methods for taking into account susceptibility deviations in magnetic-resonance-based therapy planning by a magnetic resonance tomography unit. A B0 field map is determined by the magnetic resonance tomography unit. A location blur distribution is determined from the B0 field map and from the location blur distribution in turn, a parameter of an image acquisition as a function of the location blur distribution, in such a way that an image acquisition brings about a reduced location blur with the determined parameter.

Abstract: The disclosure relates to a method for ascertaining a deviation of at least one gradient field of a magnetic resonance system from a reference. The method includes providing at least one first image data set and one second image data set of a phantom with isotropic diffusion properties, recorded with a diffusion-weighted imaging sequence, wherein the first image data set and the second image data set are recorded with different diffusion-weightings along a gradient direction to be tested of the gradient field using the magnetic resonance system. The method further includes ascertaining a map of apparent diffusion coefficients from the image data sets for at least a portion of the image points of the image data sets. The method further includes comparing the apparent diffusion coefficients with the reference.

Abstract: The disclosure relates to a method for ascertaining a deviation of at least one gradient field of a magnetic resonance system from a reference. The method includes providing at least one first image data set and one second image data set of a phantom with isotropic diffusion properties, recorded with a diffusion-weighted imaging sequence, wherein the first image data set and the second image data set are recorded with different diffusion-weightings along a gradient direction to be tested of the gradient field using the magnetic resonance system. The method further includes ascertaining a map of apparent diffusion coefficients from the image data sets for at least a portion of the image points of the image data sets. The method further includes comparing the apparent diffusion coefficients with the reference.

Abstract: A patient table of an imaging apparatus includes a receiving device for receiving a transfer device that is reversibly transferable to the patient table. In an embodiment, the receiving device is arranged on the patient table such that a surface region of the receiving device is in contact with the transfer device when the transfer device is received. Further, the receiving device is embodied to receive the transfer device reversibly along at least two axes that are different from one another in the horizontal plane.

Abstract: A method for operating a mobile magnetic resonance tomography system having magnets and/or coils generating a magnetic field and a shield surrounding the magnets and/or coils is intended to enable an optimal image quality during the examination and at the same time have a small space requirement. For this purpose, a temperature is measured at a plurality of points on the shield by a temperature measuring system, where measured data of the temperature measuring system is sent to a compensation system, and where effects of temperature differences on the homogeneity of the magnetic field are compensated by the compensation system.

Abstract: A magnetic shield for a field magnet of a magnetic resonance system is provided. A magnet apparatus with a field magnet for a magnetic resonance system with active shielding and a magnetic shield, wherein the magnetic shield forms a hollow body which accommodates the field magnets is also provided. A wall of the hollow body has a first, a second and a third area, which are disposed along the axis. In this case the second area separates the first area and the third area from one another and has a smaller wall thickness than the first and the third area.

Abstract: A method for operating a mobile magnetic resonance tomography system having magnets and/or coils generating a magnetic field and a shield surrounding the magnets and/or coils is intended to enable an optimal image quality during the examination and at the same time have a small space requirement. For this purpose, a temperature is measured at a plurality of points on the shield by a temperature measuring system, where measured data of the temperature measuring system is sent to a compensation system, and where effects of temperature differences on the homogeneity of the magnetic field are compensated by the compensation system.

Abstract: A magnetic shield for a field magnet of a magnetic resonance system is provided. A magnet apparatus with a field magnet for a magnetic resonance system with active shielding and a magnetic shield, wherein the magnetic shield forms a hollow body which accommodates the field magnets is also provided. A wall of the hollow body has a first, a second and a third area, which are disposed along the axis. In this case the second area separates the first area and the third area from one another and has a smaller wall thickness than the first and the third area.

Abstract: A method for gathering information relating to at least one object positioned on a patient positioning device of a medical imaging device is provided. The method includes the following steps: gathering by optical means of 3-D image data relating to the object positioned on the patient positioning device by means of a 3-D image data recording unit, transferring the gathered 3-D image data from the 3-D image data recording unit to an evaluating unit, determining information relating to the object positioned on the patient positioning device based on the 3-D image data by means of the evaluating unit, generating output information based on the determined information relating to the object positioned on the patient positioning device, and outputting the output information relating to the object positioned on the patient positioning device.

Abstract: An operating container for a magnetic resonance apparatus is proposed. The container has outer walls that enclose an interior space which is embodied for accommodating and operating a magnetic resonance apparatus. The container has a magnetic field shield arranged inside the outer walls. A latent heat storage material is arranged between the outer walls and the magnetic field shield.

Abstract: In a method for integration of vectorial and/or tensorial measurement data into a representation on a screen of an anatomical image exposure acquired with an imaging medical examination apparatus, upon and/or after selection of, and/or upon and/or after sweeping over, image points of the anatomical representation by means of a screen representation that is associated with at least one control tool operable by a user, the screen representation and/or the speed of movement of the screen representation is varied dependent on the direction information provided by the measurement data.

Abstract: A computer interactively receives a selection command from a user for an internally contiguous sub-range of images of a sequence within the sequence. The computer outputs the images of the internally contiguous sub-range to the user via a viewing device in a first presentation size that is uniform for the images of the internally contiguous sub-range. The computer outputs images of the sequence that lie outside of the internally contiguous sub-range to the user via the viewing device simultaneously with the images of the internally contiguous sub-range with a respective second presentation size that is smaller than the first presentation size. The geometric arrangement of the output images on the viewing device forms a geometric sequence. The order of the output images coincides with the order of the sequence of images.

Abstract: In a method for integration of vectorial and/or tensorial measurement data into a representation on a screen of an anatomical image exposure acquired with an imaging medical examination apparatus, upon and/or after selection of, and/or upon and/or after sweeping over, image points of the anatomical representation by means of a screen representation that is associated with at least one control tool operable by a user, the screen representation and/or the speed of movement of the screen representation is varied dependent on the direction information provided by the measurement data.

Abstract: It is possible to suppress noise by intensively damping mechanical vibrations in MRT devices, especially gradient coils and magnet vessels, using compound materials containing centers of negative stiffness. The invention relates to a core spin tomography device, wherein the vibrations of the device components, which can in many aspects have a negative effect on the entire system, can be reduced or the noise transmission paths can be reduced. The core spin tomography device has a basic field magnet which is surrounded by a magnet envelope which surrounds and defines an inner area, a gradient coil system being disposed inside the inner area. Damping elements made of a material having a negative stiffness are arranged on an inner side of the magnet envelope defining the inner area in order to absorb acoustic vibrations which are produced during switching of the gradient coil system.

Abstract: It is possible to suppress noise by intensively damping mechanical vibrations in MRT devices, especially gradient coils and magnet vessels, using compound materials containing centers of negative stiffness. The invention relates to a core spin tomography device, wherein the vibrations of the device components, which can in many aspects have a negative effect on the entire system, can be reduced or the noise transmission paths can be reduced. The core spin tomography device has a basic field magnet which is surrounded by a magnet envelope which surrounds and defines an inner area, a gradient coil system being disposed inside the inner area. Damping elements made of a material having a negative stiffness are arranged on an inner side of the magnet envelope defining the inner area in order to absorb acoustic vibrations which are produced during switching of the gradient coil system.

Abstract: An MR scanner with a setting mechanism for patient-dependent control of the radio-frequency fields and magnetic fields for adhering to individual SAR and dB/dt limits, has an optical measuring device containing a distance sensor for determining the surface of a patient and for determining a setting signal for the setting mechanism.

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: A magnetic resonance apparatus has at least one section of an optical fiber with at least one Bragg grating having a Bragg wavelength. The Bragg grating is arranged with respect to the magnetic resonance apparatus so that at least one deformation of the magnetic resonance apparatus can be acquired.

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: An MR scanner with a setting mechanism for patient-dependent control of the radio-frequency fields and magnetic fields for adhering to individual SAR and dB/dt limits, has an optical measuring device containing a distance sensor for determining the surface of a patient and for determining a setting signal for the setting mechanism.