Patent ID: 8664956

Claim:
An antenna arrangement for magnetic resonance applications, the antenna arrangement comprising: a plurality of antenna elements that are coupled at ends of the plurality of antenna elements via end rings, substantially parallel to a common central axis and distributed around the common central axis at a distance from the common central axis, such that the plurality of antenna elements enclose an essentially cylindrical volume; a plurality of injection points; intermediate connections that connect immediately adjacent antenna elements of the plurality of antenna elements at connection points that lie between the ends of the plurality of antenna elements; and a preamplifier connected to each of the intermediate connections and having an output that, when the antenna arrangement is in a receive mode, corresponds to a respective feed-out point configured to output a received magnetic resonance signal, wherein, in a send mode, the antenna arrangement is configured to inject radio-frequency send signals into the plurality of antenna elements using the plurality of injection points, such that corresponding uniform element signals oscillate in respective antenna elements of the plurality of antenna alements, and wherein the antenna arrangement is configured to adjust the intermediate connections to a higher resistance when the antenna arrangement is in the send mode and to adjust at least some of the intermediate connections to a lower resistance when the antenna arrangement is in the receive mode.