This is because the MRI examination requires the patient to be placed in a strong magnetic field, and the resonance signal is generated by the RF pulse excitation, which is received by the machine to form a magnetic resonance image. In the process of RF pulse excitation, a large noise and slight heat will be generated, and the continuous noise will make some patients feel uncomfortable. In addition, the magnetic resonance examination bed is small and the aperture is narrow, some patients will have strong claustrophobia when entering the magnetic resonance examination bed, which will make the patients have fear, fear and other psychological state, and cannot cooperate with the completion of magnetic resonance examination. Nowadays, the level of MRI machine hardware is constantly improving, which can greatly reduce the impact of noise on patients. However, some patients may still have a strong feeling of discomfort and discomfort due to the existence of claustrophobia phenomenon, which in turn may affect the MRI image examination.