Patent ID: 8531186

Claim:
A magnetic resonance body coil assembly, comprising: a first RF coil and a second RF coil that generate a radio-frequency field in space that excites nuclear spins in a subject in order to produce magnetic resonance data from the subject resulting from the excited nuclear spins; a power control apparatus connected to said first RF coil and said second RF coil; said power control apparatus comprising a first signal generating unit that generates a first signal and a first power amplification unit connected between said first signal generating unit and said first RF coil that amplifies said first signal and that provides the amplified first signal to said first RF coil, a second signal generating unit that generates a second signal and a second power amplification unit connected between said second signal generating unit and said second RF coil that amplifies said second signal and provides the amplified second signal to said second RF coil; and said power control apparatus comprising a control unit configured to control said first and second signal generating units and said first and second power amplification units in order to provide respective individual transmitting powers to said first RF coil and said second RF coil according to a field strength needed at a certain position in said radio-frequency field, and a ratio of the field strengths generated by said first RF coil and said second RF coil at said certain position, said respective individual transmitting powers provided to said first RF coil and said second RF coil causing said first RF coil and said second RF coil to radiate said radio-frequency field.