Local coil matrix and methods for image acquisition

A method for image acquisition with a magnetic resonance tomography unit with a local coil matrix, the method comprising:

• transmitting a first excitation pulse;
• encoding spins by gradient coils;
• receiving magnetic resonance signals by a second set of first coil windings, second coil windings, or first coil windings and second coil windings;
• transmitting a second excitation pulse;
• encoding the spins by the gradient coils;
• and
• receiving magnetic resonance signals by a fourth set of first coil windings, second coil windings, or first coil windings and second coil windings;
• repeating the transmitting of the first excitation pulse, the transmitting of the second excitation pulse, the encoding of the spins by the gradient coils twice, and the receiving of the magnetic resonance signals with a different second set of first coil windings, second coil windings, or first coil windings and second coil windings and a different fourth set of first coil windings, second coil windings, or first coil windings and second coil windings;
• and
• generating an image in dependence on the magnetic resonance signals received from the second sets and the fourth sets;
• wherein the second set of first coil windings, second coil windings, or first coil windings and second coil windings is different than the fourth set of first coil windings, second coil windings, or first coil windings and second coil windings.

A local coil matrix for image acquisition with a magnetic resonance tomography unit, the local coil matrix comprising:

• a plurality of coil windings;
• at least one coupling element;
• a plurality of coil segments;
• and
• a controller in signal connection with the at least one coupling element;
• wherein the local coil matrix is configured, during magnetic resonance imaging, to acquire, excite, or acquire and excite a predetermined region of a patient arranged in the vicinity of the local coil matrix with selectable differently sized sensitivity ranges;
• wherein each coupling element of the at least one coupling element is in signal connection with at least two coil segments of a coil winding of the plurality of coil windings,
• wherein the controller is configured to interconnect the at least two coil segments to a first coil winding of the plurality of coil windings and to a second coil winding of the plurality of coil windings, the interconnection of the at least two coil segments to the first coil winding comprising activation of a first switching state of the at least one coupling element and the interconnection of the at least two coil segments to the second coil winding comprising activation of a second switching state of the at least one coupling element, and
• wherein the first coil winding includes a smaller enclosed area than the second coil winding.