A manufacturing method for a fluxgate chip, comprising: firstly, selecting two high-resistance silicon wafers, electroplating a ferromagnetic core on the surface of one of the two high-resistance silicon wafers, and providing a ferromagnetic core cavity on the surface of the other high-resistance silicon wafer; then, bonding the two high-resistance silicon wafers up and down; next, respectively providing coil grooves, through grooves and electrode windows on the surfaces of opposite sides of the two high-resistance silicon wafers to form a silicon wafer mold; and finally, filling the surface of the silicon wafer mold with alloy. By means of electroplating, post-bonding and final etching, on the one hand, the formed fluxgate chip has both small thickness and sufficient strength, on the other hand, large-scale batch production of the fluxgate chip can be achieved, the working efficiency is improved, and the production cost is reduced.

The invention relates to an MRI apparatus and a method of MRI involving the acquisition of a first and a second MRI image with mutually different orientations between the BO magnetic field and the object to be investigated. For instance, when imaging structures such as a tendon, due to the magic angle effect, this results in a change in image contrast. According to the invention, a coregistration can be performed between the first and the second MRI image. Moreover, the orientation of a structure within the object can be determined on the basis of the different orientations and the image intensity in the first and the second MRI image. The invention further discloses an apparatus for carrying out the method and a method of shimming the BO magnetic field of the apparatus.

The invention relates to an MRI apparatus and a method of MRI involving the acquisition of a first and a second MRI image with mutually different orientations between the BO magnetic field and the object to be investigated. For instance, when imaging structures such as a tendon, due to the magic angle effect, this results in a change in image contrast. According to the invention, a coregistration can be performed between the first and the second MRI image. Moreover, the orientation of a structure within the object can be determined on the basis of the different orientations and the image intensity in the first and the second MRI image. The invention further discloses an apparatus for carrying out the method and a method of shimming the BO magnetic field of the apparatus.

A fastening device for releasably fastening a probe (1) to an NMR magnet (2). An insert part (3) fastens the probe to a retaining system (4) connected to the magnet. A force-variable connection is established by the insert part with spring elements (8). The probe fastens to the insert part with rigid retaining elements (6). When closed, a connection without mechanical play exists between the insert part and the retaining elements when the spring elements are under tension. An annular disc-shaped pretensioning element (9) is arranged between the insert part and the retaining system. By rotating the pretensioning element relative to the insert part, the pretensioning element presses on and pretensions the spring elements. When open, the spring elements and the retaining elements are configured to connect with a mechanical play of 0.5 to 5 mm between the insert part and the retaining elements when the spring elements are pretensioned.

A fastening device for releasably fastening a probe (1) to an NMR magnet (2). An insert part (3) fastens the probe to a retaining system (4) connected to the magnet. A force-variable connection is established by the insert part with spring elements (8). The probe fastens to the insert part with rigid retaining elements (6). When closed, a connection without mechanical play exists between the insert part and the retaining elements when the spring elements are under tension. An annular disc-shaped pretensioning element (9) is arranged between the insert part and the retaining system. By rotating the pretensioning element relative to the insert part, the pretensioning element presses on and pretensions the spring elements. When open, the spring elements and the retaining elements are configured to connect with a mechanical play of 0.5 to 5 mm between the insert part and the retaining elements when the spring elements are pretensioned.

A gradient coil unit includes a primary coil, a secondary coil and a carrier unit. The carrier unit stabilizes the primary coil and the secondary coil, and is formed from an encapsulating material. The carrier unit may include at least two encapsulating pockets that each include a delimiting structure and a filling. A thermoset component unit includes an electronic component and a carrier unit surrounding the electronic component, and being formed from an encapsulating material. The carrier unit may include at least one encapsulating pocket that includes a delimiting structure having a first material, and a filling having a second material.

An apparatus for providing a B.sub.0 magnetic field for a magnetic resonance imaging system. The apparatus includes at least one permanent B.sub.0 magnet to contribute a magnetic field to the Bo magnetic field for the MRI system and a ferromagnetic frame configured to capture and direct at least some of the magnetic field generated by the B.sub.0 magnet. The ferromagnetic frame includes a first post having a first end and a second end, a first multi-pronged member coupled to the first end, and a second multi-pronged member coupled to the second end, wherein the first and second multi-pronged members support the at least one permanent B.sub.0 magnet.

An apparatus for providing a B.sub.0 magnetic field for a magnetic resonance imaging system. The apparatus includes at least one permanent B.sub.0 magnet to contribute a magnetic field to the Bo magnetic field for the MRI system and a ferromagnetic frame configured to capture and direct at least some of the magnetic field generated by the B.sub.0 magnet. The ferromagnetic frame includes a first post having a first end and a second end, a first multi-pronged member coupled to the first end, and a second multi-pronged member coupled to the second end, wherein the first and second multi-pronged members support the at least one permanent B.sub.0 magnet.

A device which can be used for current measurement is described hereinafter. According to one exemplary embodiment, the device comprises the following: a coil carrier extending along a longitudinal axis having a base body which in a central region has a section having reduced cross-sectional area, which is smaller than the cross-sectional area outside the central region, and a magnetic field probe having a ferromagnetic sensor strip, which is fastened to the coil carrier in the section having reduced cross-sectional area, and having a sensor coil which is wound around the coil carrier in the central region so that it encloses the sensor strip. The device also comprises a film which at least partially covers the section having reduced cross-sectional area. A secondary winding is wound around the coil carrier, wherein the secondary winding is wound around the film in the section having reduced cross-sectional area.

A device which can be used for current measurement is described hereinafter. According to one exemplary embodiment, the device comprises the following: a coil carrier extending along a longitudinal axis having a base body which in a central region has a section having reduced cross-sectional area, which is smaller than the cross-sectional area outside the central region, and a magnetic field probe having a ferromagnetic sensor strip, which is fastened to the coil carrier in the section having reduced cross-sectional area, and having a sensor coil which is wound around the coil carrier in the central region so that it encloses the sensor strip. The device also comprises a film which at least partially covers the section having reduced cross-sectional area. A secondary winding is wound around the coil carrier, wherein the secondary winding is wound around the film in the section having reduced cross-sectional area.