Patent ID: 9354286
Filing Date: 2016-05-31
CPC Classification: G01R

Claim Text:
1. A local coil arrangement for magnetic resonance purposes, the local coil arrangement comprising: at least one local coil; at least one conductor and associated return conductors; and a mechanical holding structure, in which the at least one local coil and the at least one conductor with the associated return conductors are arranged, wherein when the entirety or a portion of the mechanical holding structure surrounds the at least one local coil and is inserted in a homogeneity region of a basic magnetic field of a magnetic resonance system, wherein the local coil or another receive coil is operable to receive magnetic resonance signals originating from a specific detection zone for the local coil arrangement; wherein the at least one conductor is exposable to direct current or low-frequency alternating current, the at least one conductor being arranged such that the at least one conductor extends orthogonally to a direction of the basic magnetic field, and wherein the at least one conductor generates a compensation magnetic field when exposed to the direct current or the low-frequency alternating current, the compensation magnetic field comprising field lines that encircle the at least one conductor and form a compensation magnetic field angle with the direction of the basic magnetic field in an edge area of the specific detection zone; and wherein the return conductors complete an electric circuit containing the at least one conductor, wherein at least one return conductor, running parallel with the at least one conductor, generates an interfering magnetic field counteracting the compensation magnetic field when exposed to the direct current or the low-frequency alternating current, the interfering magnetic field comprising field lines that encircle the respective return conductor and form an interfering magnetic field angle with the direction of the basic magnetic field in the edge area, the interfering magnetic field angle being larger than the compensation magnetic field angle, and the respective return conductor being further away from the edge area than the at least one conductor, wherein the at least one conductor is arranged outside the specific detection zone at an edge of the edge area.