Radio frequency coil device and magnetic resonance imaging system

The utility model relates to a radio frequency coil device and a magnetic resonance imaging system. The device comprises a magnet, a radio frequency transmitting coil, a radio frequency receiving coil, a radio frequency shielding layer and a signal amplification and control system, the magnet rotates around the center. The radio frequency transmitting coil and the radio frequency receiving coil are both located in the rotating plane of the magnet. The radio frequency transmitting coil is placed in the vertical direction of the magnet rotating plane; the radio frequency transmitting coil is circular. The radio frequency receiving coil is a multi-channel coil; the radio frequency shielding layers are located on the two poles of the magnet, and the signal amplification and control system is used for amplifying magnetic resonance signals of the radio frequency receiving coil, providing driving signals of the radio frequency receiving coil and conducting signal channel selection on the radio frequency receiving co