在MR扫描过程中，特别是超导系统，有时会产生很强的噪声，引起病人的不适甚至恐惧。如果受检者紧张而移动，则会影响图像效果。-On MR scanning process, especially the superconducting system, sometimes produce strong noise, cause the patient s discomfort and even fear. If the client s tense and mobile, can affect the image effects.