Instead of passing X-rays through the body,MRI relies on a strong magnetic field and a radio signal that together trigger atom in the body to send out signals of their own.

 
  • 代替X射线穿透人体的方式,核磁共振成像依靠一强磁场和无线电信号来共同触发体内的原子发出它们自己的信号。
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