Longman Dictionary of Contemporary English homepage

MRI

noun
     
MRI medical
1 [uncountable]
magnetic resonance imaging
the process of using strong magnetic fields to make a picture of the inside of someone's body for medical reasons [↪ CTscan, X-ray]
2 [countable] a picture of the inside of someone's body produced with MRI equipment:
Brian had an MRI taken Sunday.

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