Magnetic resonance measurement apparatus

A magnetic resonance measurement apparatus comprising a first LC circuit configured to form an oscillating magnetic field that causes an object to exhibit magnetic resonance, wherein

• the first LC circuit includes a parallel connection assembly including a diode,
• the parallel connection assembly further includes a diode connected, in parallel and in reverse direction, to the diode,
• in a first state in which bias current is not applied to the diode of the parallel connection assembly and oscillating voltage for forming the oscillating magnetic field is applied to the first LC circuit, the diode of the parallel connection assembly functions as a short-circuit such that the resonance frequency of the first LC circuit becomes a first resonance frequency, and
• in a second state in which bias current is not applied to the diode of the parallel connection assembly and the oscillating voltage is not applied to the first LC circuit, the diode of the parallel connection assembly functions as capacitance such that the resonance frequency of the first LC circuit becomes a second resonance frequency that is different from the first resonance frequency.