Wireless coils, magnetic resonance imaging systems including the same, and control methods for the magnetic resonance imaging

A magnetic resonance imaging system, comprising:

• a support cylinder providing an accommodation cavity, the accommodation cavity being configured to accommodate a subject;
• a transmitting coil, disposed on the support cylinder and located on an outer surface of the support cylinder, for generating a radio frequency field;
• a flexible member, capable of covering an organ or tissue of the subject;
• and
• one or more magnetic coupling units (20), disposed on the flexible member;
• wherein
• the one or more magnetic coupling units (20) are capable of resonating under the radio frequency field to produce a focal field.

A control method for a magnetic resonance imaging system, wherein the magnetic resonance imaging system includes a transmitting coil and a wireless coil, the transmitting coil and the wireless coil being disposed separately from each other, and the wireless coil being capable of covering at least a portion of a subject, wherein the control method comprises:

• controlling the transmitting coil to be in a transmission mode to transmit a radio frequency field to the subject;
• controlling the wireless coil to resonate under the radio frequency field to produce a focal field, the focal field being configured to excite nuclei of the at least a portion of the subject;
• and
• controlling the transmitting coil to be in a reception mode to receive a magnetic resonance signal from the organ or the tissue of the subject.