Siemens Aktiengesellschaft

Thomas Kolbeck

Stefan Stocker

Lothar Schön

Johann Schuster

Michael Eberler

Peter Dietz

Ludwig Eberler

Lothar Schoen

Jörg Riegler

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.

Method to produce a curved coil, in particular a sub-coil of a gradient coil for a magnetic resonance apparatus

In a method for manufacturing a gradient coil system for a magnetic resonance apparatus, the conductor arrangement of the gradient coil system is produced by successively applying respective layers of metal powder sinter material on a workpiece platform, and successively sintering the respective layers by the application of radiation, such as laser radiation, to the individual layers, and the conductor arrangement is assembled with other components to produce the gradient coil system. A gradient coil system manufactured in accordance with this method includes a number of assembled components, including an electrical conductor arrangement, with the electrical conductor arrangement having conductors formed by radiation-sintered metal powder material.

Gradient coil system and method for the production thereof

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.

Magnetic resonance device with attachment means for attaching a gradient coil, attachment means

A magnetic resonance apparatus has a basic field magnet with an interior bore having a bulge therein. A mass augmentation device is disposed in the bulge, and is composed of a number of assembled individual segments. The mass augmentation device reduces the propagation of mechanical oscillations that are produced during operation of the magnetic resonance apparatus, and which otherwise would produce unwanted noise.

Magnetic resonance apparatus having a bulged interior bore filled with a mass augmentation

A magnetic resonance tomography apparatus has a basic field magnet that is surrounded by a magnet envelope. This basic field magnet surrounds and limits an interior space with a gradient coil system disposed in this interior space and a body coil having an RF antenna and a carrying tube disposed in said gradient coil system as an inner encapsulation cylinder. The magnet envelope and the gradient coil system are both optically as well as acoustically closed by the body coil and a cladding at the end faces and in the interior. The body coil is manufactured by a vacuum casting or vacuum die-casting process.

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Kalchreuth, Germany

Thomas Kolbeck