摘要:
A method and a magnetic resonance apparatus compensate for inhomogeneities in a magnetic field generated by the magnetic resonance apparatus with a shim coil of the magnetic resonance apparatus. The shim coil is arranged at an object under investigation. A position and an orientation of the shim coil are automatically determined. The inhomogeneities of the magnetic field are determined. The inhomogeneities are compensated for via the shim coil depending on the position and the orientation of the shim coil.
摘要:
A magnetic resonance coil apparatus is provided, the apparatus having a posterior coil unit including a base unit and a further coil component, wherein the further coil component is arranged so as to be able to be tilted on the base unit with respect to the base unit and wherein the posterior coil unit includes a position acquisition unit.
摘要:
A magnetic resonance coil apparatus is provided, the apparatus having a posterior coil unit including a base unit and a further coil component, wherein the further coil component is arranged so as to be able to be tilted on the base unit with respect to the base unit and wherein the posterior coil unit includes a position acquisition unit.
摘要:
A magnetic resonance (MR) antenna apparatus that is arrangeable in and/or on an MR local coil is provided. The MR antenna apparatus is arrangeable in and/or on an MR local coil. The MR antenna apparatus includes at least one rigid-flexible conductor plate with at least one antenna and a plurality of rigid partial conductor plates. The MR antenna apparatus has a form that is adaptable by a relative tilting of the plurality of rigid partial conductor plates.
摘要:
A method for determining a position of a mobile device relative to a B0 field magnet along a z-coordinate axis, and a device and a magnetic resonance tomography unit for performing the method are provided. The device includes a magnetic field strength sensor arranged in a fixed relative position. A characteristic magnetic field strength Bref of the B0 field magnet that emerges for a plurality of x-y coordinate pairs with a same reference z-coordinate zref is ascertained. The device is moved along the z-coordinate axis until the magnetic field strength sensor measures the characteristic magnetic field strength Bref.
摘要:
A printed circuit board (PCB) is flat, providing a top side and a bottom side. A plurality of terminations is disposed on the top side in proximity to one end face of the PCB. Each termination has at least one contact that is connected to a respective conductor track of the PCB. The respective conductor track is connected to a respective local coil or to a contact disposed on the top side or the bottom side of a respective further termination. The local coil and/or at least one of the further terminations are disposed in proximity to the other end face. A basic shield impervious to frequencies in a magnetic resonance range is disposed on the top side and/or the bottom side, and an auxiliary shield electrically connected to the basic shield and impervious to frequencies in the magnetic resonance range is disposed on narrow sides of the PCB.
摘要:
A printed circuit board (PCB) is flat, providing a top side and a bottom side. A plurality of terminations is disposed on the top side in proximity to one end face of the PCB. Each termination has at least one contact that is connected to a respective conductor track of the PCB. The respective conductor track is connected to a respective local coil or to a contact disposed on the top side or the bottom side of a respective further termination. The local coil and/or at least one of the further terminations are disposed in proximity to the other end face. A basic shield impervious to frequencies in a magnetic resonance range is disposed on the top side and/or the bottom side, and an auxiliary shield electrically connected to the basic shield and impervious to frequencies in the magnetic resonance range is disposed on narrow sides of the PCB.
摘要:
The present embodiments relate to a local coil for a magnetic resonance tomography system. The local coil extends in a first direction and in a second direction orthogonal to the first direction. The local coil has a plurality of coil elements. At least some coil elements of the plurality overlap at least partly in a third direction running between the first direction and the second direction.
摘要:
A local coil for a magnetic resonance tomography device includes an elastic antenna support part with several antennas and an electronic part with electronic components connected to the antennas via supply lines. At least one part of the electronic part is located outside of the antenna support part.
摘要:
A method for manufacturing a local coil for a magnetic resonance tomography device includes manufacturing the local coil with a flat cross-section. The method also includes deforming the local coil from the flat cross-section into a curved cross-section.