Superconducting magnets are made by using the phenomenon that the resistance of superconducting materials decreases to zero at a certain temperature. They are usually made of niobium-titanium alloy material and cooled by liquid helium (4.2K). When current passes through the magnet coil, the After the magnetic field, disconnect the power supply to form a stable and uniform magnetic field. The magnet keeps the coil below the critical temperature through the refrigerant, and no additional power supply is needed.

Superconducting magnets can produce higher magnetic field strength, better magnetic field stability and magnetic field uniformity. This means better image quality, better signal-to-noise ratio, contrast and resolution, and faster imaging speed.

Conventional superconducting magnets generally have a barrel-shaped structure, which is prone to potential "claustrophobia" and is not conducive to doctors' operation and observation of pet signs under anesthesia. In addition, because the conventional superconducting magnet has a larger stray magnetic field, a larger device installation area is required.