Patent ID: 7405567

Claim:
A method for obtaining magnetic resonance signals from a microcoil at low frequency comprising the steps of: connecting the microcoil in series with a second coil, whereby the microcoil is an effective magnetic resonance transmitter or receiver coil; forming a resonant circuit of the coils with a capacitor whose capacitance is determined primarily by the inductance of the second coil; permitting the resonant circuit to resonate at low frequency, with alternating current at a resonance wavelength; locating the microcoil remotely from the second coil and capacitor; and connecting electrically the microcoil in parallel with the second coil by means of a transmission line having a length that is an odd multiple of a length corresponding substantially to one-fourth of the resonance wavelength; whereby the remotely located microcoil presents, in the resonant circuit, as a large impedance in parallel to the second coil.