Abstract: Embodiments of the invention pertain to a method and apparatus for magnetic resonance imaging and spectroscopy (MRI/S). In a specific embodiment, the method and apparatus for MRI/S can be applied at two or more resonant frequencies utilizing a wireless RF receiving coil. In an embodiment, the wireless coil, which can be referred to as the implant coil, can be incorporated into an implantable structure. The implantable structure can then be implanted in a living body. The wireless RF receiving coil can be inductively coupled to another RF coil, which can be referred to as an external coil, for receiving the signal from the wireless implant RF coil. In an embodiment, the implantable structure can be a capsule compatible with implantation in a living body. The implantable structure can incorporate a mechanism for adjusting the impedance of the implant coil so as to alter the resonance frequency of the implant coil.