Magnet resonance coil and thus operating magnetic resonance apparatus and the magnet resonance system, as well as a method for the operation of the magnet resonance coil

摘要

The invention relates to a magnet resonance coil (21, 22) for a magnetic resonance apparatus (1) with a measuring space (2) for an object to be examined (p) and a cylindrical bird-cage - antenna arrangement (5), which are provided with a plurality of at least partially around the measuring space (2) of antenna elements (6) arranged in the form of circumferential connected (6a) and connecting the same axial jacket rods (6b), wherein the antenna elements (6) electrical components (11, 12), in particular reactive capacitive (11) and / or inductive systems (12), contain. The magnet resonance coil (21, 22) has, in addition, at least two mutually in particular by 90° phase-shifted antennas, and memory (14, 15), by means of which high frequency energy of the bird-cage - antenna arrangement (5) can be supplied to. In this case, the antennas memory contain solutions (14, 15) at least a symmetrical supply (14) via at least one of the electrical components (11, 12) of the bird-cage - antenna arrangement (5) as well as at least one assigned asymmetric supply (15) between the bird-cage - antenna arrangement (5) and a shield connection, preferably a high frequency screen system (10). Furthermore, a magnetic resonance apparatus (1) with such a magnet resonance coil (21, 22), a magnet resonance system with such a magnetic resonance apparatus (1) as well as a method for the operation of a magnetic resonance coil (21, 22) for a magnetic resonance apparatus (1) described.