Abstract: A magnetic resonance imaging device may include a field generator configured to provide a magnetic field in an imaging volume of the magnetic resonance imaging device. The field generator may include at least one magnet that confines the imaging volume in at least one spatial direction. The at least one magnet may be curved in such a way that a perpendicular distance between a line oriented along a direction of access to the imaging volume and a surface directed towards the imaging volume of the at least one magnet varies in the direction of access to the imaging volume.

Abstract: A magnetic resonance imaging device may include a field generator for generating at least one magnetic gradient field. The field generator may include a first magnet and a second magnet confining an imaging volume of the magnetic resonance imaging device in two spatial directions. The first magnet and the second magnet may be arranged asymmetrically with respect to the imaging volume. The magnetic resonance imaging device may be used to perform a method for acquiring an image of a diagnostically relevant body region of a patient.

Abstract: A magnetic resonance ‘MR’ scanner utilizing a passive magnetic shielding technique. The scanner includes a gradient coil inductively coupled to a managed eddy current structure which establishes passive magnetic shielding for the gradient coil due to the inductive coupling.

Abstract: A magnetic resonance imaging device having a field generation unit configured to provide a magnetic field in an imaging volume of the magnetic resonance imaging device. The field generation unit has at least one magnet. A surface of the field generation unit directed towards the imaging volume of the at least one magnet has a concave shape, wherein a direction of access to the imaging volume is oriented essentially perpendicular to a main direction of magnetic field lines in the imaging volume.

Abstract: A device for use in magnetic resonance imaging (MRI) systems may include a superconducting main magnet coil; and a thermal radiation shield that encloses the superconducting main magnet coil. The shield may include an inner cylindrical bore tube, an outer cylindrical wall, and annular end walls welded between the annular cylindrical bore tube and the outer cylindrical wall to form a closed, hollow cylindrical vessel. A distribution of a position and length of welds that affix the annular end walls to the inner cylindrical bore tube may include a predetermined arrangement of welds of varying lengths interspersed with gaps of varying lengths.

Abstract: A gradient system for a magnetic resonance device, configured to, when arranged in use in the magnetic resonance device, generate a variable magnetic gradient field in a scanning region of the magnetic resonance device. The gradient system includes a first magnetic assembly configured to generate a first magnetic gradient field contribution to the magnetic gradient field. The first magnetic assembly includes one or more components configured to, in use, act as respective non-electric magnets to generate the first magnetic gradient field contribution. A positioning unit is configured to adjust a position and/or orientation, relative to the magnetic resonance device, of the first magnetic assembly and/or of one or more of the components of the first magnetic assembly to adjust the first magnetic gradient field contribution and thereby to vary the magnetic gradient field.

Abstract: A magnetic resonance imaging system comprises a field generation unit and a supporting structure for providing structural support for the field generation unit, wherein the field generation unit comprises at least one magnet for generating a B0 magnetic field and an opening configured to provide access to an imaging volume positioned in the B0 magnetic field along at least one direction and wherein the at least one direction is angled with respect to a main direction of magnetic field lines of the B0 magnetic field in the imaging volume.

Abstract: A magnetic resonance imaging device having a field generation unit configured to provide a magnetic field in an imaging volume of the magnetic resonance imaging device. The field generation unit has at least one magnet. A surface of the field generation unit directed towards the imaging volume of the at least one magnet has a concave shape, wherein a direction of access to the imaging volume is oriented essentially perpendicular to a main direction of magnetic field lines in the imaging volume.

Abstract: A magnetic resonance imaging device may include a field generator for generating at least one magnetic gradient field. The field generator may include a first magnet and a second magnet confining an imaging volume of the magnetic resonance imaging device in two spatial directions. The first magnet and the second magnet may be arranged asymmetrically with respect to the imaging volume. The magnetic resonance imaging device may be used to perform a method for acquiring an image of a diagnostically relevant body region of a patient.

Abstract: A magnetic resonance imaging device may include a field generator configured to provide a magnetic field in an imaging volume of the magnetic resonance imaging device. The field generator may include at least one magnet that confines the imaging volume in at least one spatial direction. The at least one magnet may be curved in such a way that a perpendicular distance between a line oriented along a direction of access to the imaging volume and a surface directed towards the imaging volume of the at least one magnet varies in the direction of access to the imaging volume.

Abstract: A Magnetic Resonance Imaging (MRI) system, including: two separate static magnetic field generators, which are each cylindrical, are axially aligned, and are separated by a rotary load-bearing structure arranged to freely rotate about an axis of a static magnetic field generated by the static magnetic field generators, wherein the rotary load-bearing structure is mounted on thrust bearings which take an axial load between the static magnetic field generators.

Abstract: A device for use in magnetic resonance imaging (MRI) systems may include a superconducting main magnet coil; and a thermal radiation shield that encloses the superconducting main magnet coil. The shield may include an inner cylindrical bore tube, an outer cylindrical wall, and annular end walls welded between the annular cylindrical bore tube and the outer cylindrical wall to form a closed, hollow cylindrical vessel. A distribution of a position and length of welds that affix the annular end walls to the inner cylindrical bore tube may include a predetermined arrangement of welds of varying lengths interspersed with gaps of varying lengths.

Abstract: A magnet arrangement is for use in a magnetic resonance imaging system including at least one magnet including a high temperature superconductor to provide a magnetic field in an imaging volume for acquiring magnetic resonance imaging data. A magnetic resonance imaging system includes a magnet arrangement with at least one magnet, including a high temperature superconductor, to confine an imaging volume in at least one spatial direction. The magnetic resonance imaging system is configured to acquire magnetic resonance imaging data from at least a body region of a patient positioned in the imaging volume. Further a method is for manufacturing a magnet arrangement via an additive manufacturing device, including aligning a first magnet segment with a second magnet segment and bringing the first magnet segment into contact with the second magnet segment; and performing a joining process to bond the first magnet segment to the second magnet segment.

Abstract: At least one example embodiment provides a magnetic resonance imaging system comprising a field generation unit and a supporting structure for providing structural support for the field generation unit, wherein the field generation unit comprises at least one magnet for generating a B0 magnetic field and an opening configured to provide access to an imaging volume positioned in the B0 magnetic field along at least one direction and wherein the at least one direction is angled with respect to a main direction of magnetic field lines of the B0 magnetic field in the imaging volume.

Abstract: A Magnetic Resonance Imaging (MRI) system, including: two separate static magnetic field generators, which are each cylindrical, are axially aligned, and are separated by a rotary load-bearing structure arranged to freely rotate about an axis of a static magnetic field generated by the static magnetic field generators, wherein the rotary load-bearing structure is mounted on thrust bearings which take an axial load between the static magnetic field generators.

Abstract: A system for impregnating a superconductive wire surrounded by insulation with a resin provided in liquid form in a vessel, has an input arrangement that introduces the wire into the vessel, a transport device that moves the wire through the resin in the vessel and a pressure applicator that applies pressure to the wire, transversely to its length, at at least one location within the vessel while in contact with the resin, so as to expel gases otherwise trapped within the insulated wire. Each pressure applicator is formed by a co-operative pair of pinch rollers, with one pinch roller of each pair being doubly flanged to provide a substantially central recess to accommodate the insulated wire, and the other pinch roller of each pair is formed with a central tongue dimensioned to enter the recess to trap the wire therein and apply pressure thereto.

Abstract: A superconducting magnet system comprising a superconducting magnet, itself comprising a plurality of magnet coils, arranged to protect quench heaters yet provide effective quench protection.

Abstract: A trailer for housing a mobile MRI system has magnetic shielding in the form of a plurality of sheets of magnetic material which are supported within the trailer, by a rigid supporting structure or frame. The layers are arranged in a stacked or laminar configuration with the laterally longest layer disposed inward of the remaining layers, such that the width of the gap between that layer and the exterior walls of the trailer at the lateral extremities of the shielding is greater than its width in a central area. The rigid frame maintains the gap and prevents contacting of the shielding and the trailer walls.