GRADIENT COIL ARRANGEMENT, MAGNETIC RESONANCE APPARATUS AND METHOD FOR DAMPING A GRADIENT COIL ARRANGEMENT

摘要

Gradient coil arrangement for a magnetic resonance apparatus has multiple sub-coils formed by coil conductors on a common substrate, and the gradient coil arrangement has at least one damping producer that damps voltage overshoots occurring due to capacitive and/or inductive coupling between two sub-coils as a result of interfering frequencies in the wanted signal for at least one of the sub-coils affected. The damping producer is directly applied to the coil conductor of at least one of the sub-coils involved in the capacitive and/or inductive coupling.

主权项

1. A gradient coil arrangement for a magnetic resonance (MR) apparatus, comprising;
a plurality of sub-coils formed by coil conductors on a common substrate, said sub-coils each having a sub-coil input supplied with a switching signal that produces respective currents in the coils that produce coupling, selected from the group consisting of capacitive coupling and inductive coupling, between two of said sub-coils; at least one damping producer configured to damp voltage overshoots that occur due to voltage overshoots that occur due to a resonant behavior produced by said coupling and interfering frequencies in said switching signal; and said at least one damping producer being directly applied to the coil conductor of at least one of the sub-coils involved in said coupling.