Multichannel radio frequency array for tracking a medical instrument

A local coil for percutaneous magnetic resonance tomography (MRT)-assisted minimally invasive intervention, the local coil comprising:

• a carrier body for flat arrangement on a body surface of a patient;
• a plurality of electrical antennas distributed in a predetermined arrangement over the carrier body;
• and
• a plurality of openings in the carrier body for passing medical instruments through the carrier body,
• wherein the plurality of electrical antennas have a conductor surface on the carrier body,
• wherein the conductor surface is arranged on a printed circuit board,
• wherein the plurality of electrical antennas are arranged along a plurality of parallel lines on the printed circuit board, the plurality of parallel lines on the printed circuit board including a first parallel line and a second parallel line, the second parallel line being opposite and offset relative to the first parallel line, such that the first parallel line and the second parallel line are separated from one another by a first gap,
• wherein the plurality of electrical antennas are arranged along the plurality of parallel lines, the plurality of electrical antennas including a first electrical antenna and a second electrical antenna arranged along the first parallel line and separated by a second gap, the plurality of electrical antennas also including a third electrical antenna arranged along the second parallel line, and
• wherein in a direction perpendicular to the plurality of parallel lines, in adjacent parallel lines, one electrical antenna of the plurality of electrical antennas is opposite a gap in each case, such that the third electrical antenna arranged along the second parallel line is opposite the second gap of the first parallel line in the direction perpendicular to the plurality of parallel lines.