摘要:
In a method for the production of an insulated plate for a gradient coil, bodies that serve as spacers for the creation of flow paths for a casting resin are produced on a base by a plate having apertures therein being used to spread the bodies on the base or to mold the bodies on the base from a moldable material.
摘要:
A gradient coil of a magnetic resonance apparatus has a first conductor structure and a second conductor structure connected with one another so that windings of the gradient coil are formed. The first conductor structure is formed exclusively of planar, electrically conductive elements that are insulated from one another. The second conductor structure is formed exclusively of conductive wires insulated from one another.
摘要:
A high current coaxial connection with two plug elements that can be connected with one another, in particular to connect a current-carrying coaxial line to a gradient coil of a magnetic resonance apparatus, has two spring contact elements arranged coaxially to one another to establish the electrical contact between the two plug elements.
摘要:
In a gradient coil and a method to manufacture a gradient coil for a magnetic resonance apparatus, the gradient coil has at least one saddle coil, the saddle coil having a spatially shaped, electrically conductive plate with a line-shaped recess penetrating the plate. Conductor structures that create a gradient magnetic field in an examination region when a current signal flows therethrough are formed by the recess and by the shaping of the plate. The recess is filled with an electrically insulating material before implementation of the spatial shaping.
摘要:
Method for mounting a gradient coil in a cylindrical magnet of a magnetic resonance system and associated magnetic resonance system, wherein the exterior of the gradient coil is foam-bonded flat against the inner wall of the magnet at least in sections, at least one element being foamed in place during mounting, thus creating at least one continuous channel, said channel being used for the insertion of a cutting and/or separating tool for ripping open the foam bond between the gradient coil and the cylindrical magnet.
摘要:
In a method to produce a curved coil, in particular a sub-coil of a gradient coil for a magnetic resonance apparatus, at least one conductor is wound corresponding to a predetermined pattern on a winding plate, and a winding plate composed of multiple plate elements that are moveable relative to one another is used that is formed into a curved shape after the winding of the conductor, in which curved shape the conductor is fixed while maintaining the curved shape.
摘要:
In a method for manufacturing a cooling device for a gradient coil, the cooling device having at least one flexible cooling tube arranged on a carrier plate configured in accordance with a predetermined pattern, the at least one cooling tube originally having a circular cross section, is laid in accordance with the predetermined pattern and is flattened to permanently deform its cross section.
摘要:
Disclosed is a vacuum housing for a magnetic resonance apparatus having a recess for leading through lead wires to elements located inside the vacuum housing, and a first lead-through bushing module. The first lead-through bushing module is provided with a first closing plate which is configured so as to vacuum-tightly seal the recess along with a second closing plate. The first bushing module is also provided with a first structural component that is to be at least partially led through the recess during assembly of the lead-through bushing module and whose size defines a minimum size of the recess, which is greater than the size of the first closing plate.
摘要:
A cooling apparatus for arrangement between two surface coils of a gradient coil to dissipate the heat produced when current is supplied to the surface coils by a coolant flowing into the cooling apparatus, is formed as a flexible, mat-type surface structure, and has a coolant-holding space with at least one coolant inflow and at least one coolant outflow.
摘要:
Magnetic resonance device with an assembly having a recess, in which a gradient coil unit is attached with at least one attachment means, the attachment means having two members, between which an elastic element is disposed, only one of the members in each instance being in contact with either the gradient coil unit or the assembly, with the attachment means acting as an attachment means having no elastic element in a first attachment state, in which at least a minimum force presses the two members together, in that the two members have stop surfaces, which are in contact with each other due to the minimum force acting on the members compressed elastic element and with the attachment means acting as a spring unit in a second fixing state, in that the elastic element pushes the members apart in the event of forces smaller than the minimum force and causes the attachment means to be fixed in relation to the gradient coil unit and the assembly. This has the advantage that there is no loosening of the attachment means in particular even in the event of thermal fluctuations.