Magnetic resonance imaging apparatus and method for measurement signal acquisition in a magnetic resonance imaging apparatus
View Patent ↗A magnetic resonance imaging apparatus is provided. The apparatus includes a plurality of receiving antennas for receiving a plurality of reception signals. The apparatus also includes at least one first superposition device having at least one first and one second output, which in each case serve for providing a mode formed by superposition of at least two of the reception signals. The apparatus also includes at least one first frequency division multiplex device for transmitting input signal present at a first and a second input of the frequency division multiplex device via a first transmission link on different frequency bands to a receiving unit, wherein the first output of the first superposition device is connected to the first input of the first frequency division multiplex device and the second output of the first superposition device is connected directly or indirectly to a second transmission link.
1. A magnetic resonance imaging apparatus comprising:
a plurality of receiving antennas for receiving a plurality of reception signals;
a first superposition device comprising a first output and a second output, the first output and the second output each providing a mode formed by superposition of at least two of the reception signals; and
a local coil comprising a first frequency division multiplex device and a second frequency division multiplex device, the first frequency division multiplex device for transmitting an input signal present at a first input and an input signal present at a second input of the first frequency division multiplex device via a first transmission link on different frequency bands to a receiving unit,
wherein the first output of the first superposition device is connected to the first input of the first frequency division multiplex device and the second output of the first superposition device is in signal connection with a second transmission link, and
wherein the second output of the first superposition device is also connected to an input of the second frequency division multiplex device of the local coil.
2. The magnetic resonance imaging apparatus as claimed in claim 1 , further comprising a second superposition device.
3. The magnetic resonance imaging apparatus as claimed in claim 2 , wherein the first superposition device and the second superposition device each have a same number of outputs and each have at least three outputs, wherein the respective outputs serve for providing modes of different significance with different signal-to-noise ratios in a central region of an examination volume.
4. The magnetic resonance imaging apparatus as claimed in claim 3 , wherein respective inputs of the first frequency division multiplex device, the second frequency division multiplex device, or both the first and the second frequency division multiplex devices are connected to an output of the first superposition device and an output of the second superposition device to which modes of identical significance are assigned.
5. The magnetic resonance imaging apparatus as claimed in claim 4 , wherein the second output of the first superposition device is directly connected to the second transmission link and an output of the second superposition device is directly connected to a third transmission link,
wherein modes of different significance are assigned to the second output of the first superposition device and the output of the second superposition device.
6. The magnetic resonance imaging apparatus as claimed in claim 3 , wherein the second output of the first superposition device is directly connected to the second transmission link and an output of the second superposition device is directly connected to a third transmission link,
wherein modes of different significance are assigned to the second output of the first superposition device and the output of the second superposition device.
7. The magnetic resonance imaging apparatus as claimed in claim 1 , wherein the first frequency division multiplex device comprises exactly two inputs.
8. A magnetic resonance imaging apparatus comprising:
a plurality of receiving antennas for receiving a plurality of reception signals;
a first superposition device comprising a first output and a second output, the first output and the second output each providing a mode formed by superposition of at least two of the reception signals;
a first frequency division multiplex device for transmitting an input signal present at a first input and an input signal present at a second input of the first frequency division multiplex device via a first transmission link on different frequency bands to a receiving unit; and
a second superposition device,
wherein the first output of the first superposition device is connected to the first input of the first frequency division multiplex device and the second output of the first superposition device is connected directly or indirectly to a second transmission link, and
wherein a first output of the second superposition device is connected to a second input of the first frequency division multiplex device.
9. The magnetic resonance apparatus as claimed in claim 8 , further comprising:
a second frequency division multiplex device,
wherein the second output of the first superposition device is connected to an input of the second frequency division multiplex device.
10. The magnetic resonance imaging apparatus as claimed in claim 9 , wherein the first superposition device and the second superposition device each have a same number of outputs and each have at least three outputs, wherein the respective outputs serve for providing modes of different significance with different signal-to-noise ratios in a central region of an examination volume.
11. The magnetic resonance imaging apparatus as claimed in claim 10 , wherein respective inputs of the first frequency division multiplex device, the second frequency division multiplex device, or both the first and the second frequency division multiplex devices are connected to an output of the first superposition device and an output of the second superposition device to which modes of identical significance are assigned.
12. The magnetic resonance imaging apparatus as claimed in claim 11 , wherein the second output of the first superposition device is directly connected to the second transmission link and an output of the second superposition device is directly connected to a third transmission link,
wherein modes of different significance are assigned to the second output of the first superposition device and the output of the second superposition device.
13. The magnetic resonance imaging apparatus as claimed in claim 12 , wherein the first frequency division multiplex device comprises exactly two inputs.
14. The magnetic resonance imaging apparatus as claimed in claim 10 , wherein the second output of the first superposition device is directly connected to the second transmission link and an output of the second superposition device is directly connected to a third transmission link,
wherein modes of different significance are assigned to the second output of the first superposition device and the output of the second superposition device.