Double resonant RF Coils
In general, double resonant RF coils need to be tuned and matched at both resonance frequencies, for example the resonance frequency of the 1H and 13C nucleus. Typical double resonant coils are:
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- 1H/X transceiver surface coils, for example RF SUC 400 1H/13C ID=030 TR/TR LIN/LIN
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- 1H/X linearly polarized transceiver volume coils, for example RF RES 400 1H/13C 075/040 TR/TR LIN/LIN
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- 1H/X volume coils with local X nuclei surface coils, for example RF RES 400 1H/13C 112/086 TR LIN/LIN AD and RF SUC 400 13C ID=030 RO LIN AD
Load a coil with the desired sample and proceed as follows to tune and match these coils:
- 1.
- Connect both plugs to the corresponding sockets of the RF interface
- 2.
- Start the tune/match from ParaVision, refer to ParaVision manual.
- 3.
- Tune/match the first nucleus, in general 1H.
- 4.
- Press the NEXT button on the RF interface display.
- 5.
- Tune/match the X nucleus.
- 6.
- Stop the tune/match on the RF interface display.
Some X nuclei coils do not show any significant load dependency between different loading conditions. In these cases, T/M functionality is not required and is therefore left out in the coil design.