Magnetic resonance imaging apparatus

A magnetic resonance imaging apparatus comprising:

• processing circuitry configured to:
• output a control waveform of a wideband radiofrequency (RF) pulse;
• and
• adjust a phase and/or an amplitude of the control waveform and output an adjusted control waveform;
• a signal generation unit configured to generate a control signal of the adjusted control waveform;
• a selection unit configured to include two or more pieces of frequency selection circuitry corresponding to two or more passbands, the two or more pieces of frequency selection circuitry outputting two or more frequency component signals corresponding to the two or more passbands based on the control signal;
• and
• a coil unit including a single RF coil having two or more different resonance frequencies or an RF coil group including two or more RF coils having two or more different resonance frequencies, the single RF coil or the RF coil group emitting the wideband RF pulse upon receiving the two or more frequency component signals,
• wherein the processing circuitry adjusts a phase and/or an amplitude of the control waveform based on a first circuitry characteristic of the single RF coil or the RF coil group and a second circuitry characteristic of the two or more pieces of frequency selection circuitry.