a method of using a strong magnetic field to produce an image of the inside of a person’s body (the abbreviation for ‘magnetic resonance imaging’) 磁共振成像； 磁力共振成像 The researchers used MRI to record the brain activity. 研究人员使用MRI记录了大脑的活动。 When I twisted my ankle and had to have an MRI (= a medical examination using MRI). 当我扭伤脚踝并必须进行MRI检查时。 an MRI scan 磁共振成像扫描