Patent ID: 9098672
Filing Date: 2015-08-04
Classification: G01R,G06F

Abstract:
1. A method for determining and producing an optimal structure of a high-frequency shield of a high-frequency antenna of a magnetic resonance device, the high-frequency shield shielding the high-frequency antenna from a gradient-coil arrangement, the method comprising: defining a three-dimensional initial structure of the high-frequency shield in accordance with structural parameters and jointly with the high-frequency antenna, the gradient-coil arrangement, or both the high-frequency antenna and the gradient-coil arrangement, wherein one or more of the high-frequency shield, the high-frequency antenna, or the gradient-coil arrangement are specified as a network of identical network elements, with adjacent ones of the network elements being coupled by a gate, the network being specified by scattering parameters; optimizing the structural parameters via an optimization method in accordance with at least one optimization criterion; performing a three-dimensional field simulation in accordance with the optimization method for at least one frequency based on the three-dimensional initial structure, the simulation supplying first variables that specify characteristics of the three-dimensional initial structure at the at least one frequency and with respect to the optimization criterion being evaluated; supplying a scattering-parameter matrix relating to each gate as second variables, the scattering parameters specifying the network of the high-frequency shield as the structural parameters; and producing the high-frequency shield comprising the structural parameters.