What Does MRI Mean?

MRI (Magnetic Resonance Imaging) is a technique that uses a magnetic field and radio waves to create detailed images of the organs and tissues within the body. Most MRI machines are large, tube-shaped magnets. When patients lie inside an MRI machine, the magnetic field temporarily realigns hydrogen atoms in the body. The excited hydrogen atoms emit a radio frequency signal which is measured by a receiving coil and this information is interpreted by computer to create images

MRI should not be confused with CAT (Computed Axial Tomography) scan technology. Nowadays referred to simply as CT (Computed Tomography), this method of scanning uses computer-processed combinations of many X-ray images taken from different angles to produce cross-sectional (tomographic) images (virtual 'slices') of specific areas of a scanned object, allowing the user to see inside the object without cutting.

MRI is the investigative tool of choice for neurological cancers, as it is more sensitive than CT for small tumours and offers better visualization. MRI does not use any ionizing radiation, and its use is now generally favoured in preference to CT. With the cost of MRI scanners becoming more competitive, it is likely that MRI will replace CT in the future.

Summary of Key Points

"Magnetic Resonance Imaging" is the most common definition for MRI on Snapchat, WhatsApp, Facebook, Twitter, Instagram, and TikTok.
Definition:Magnetic Resonance Imaging
4: Difficult to guess
Typical Users:
Adults and Teenagers

Image for MRI

When I write MRI, I mean this:

meaning of MRI
The image shows a typical MRI (Magnetic Resonance Imaging) scanner.


Examples of MRI in Sentences

Here is an example of MRI being used in a conversation:
  • Person A: Hi, just to let you know that mum has to go for an MRI next week.
  • Jordan: Eek, that sounds bad.
  • Person A: Nothing serious, they are just going to scan her shoulder to check for a trapped nerve.

An Academic Look at MRI

MRI is an initialism abbreviation. This means it is pronounced using its individual letters (i.e., Em Ar Aye). Initialisms contrast with acronyms, which are spoken like words.

Example of MRI Used in a Text


See Also

CAT (Computed Axial Tomography) EMS (Emergency Medical Service) EMT (Emergency Medical Technician) MD (doctor of medicine) RSI (Repetitive Strain Injury (medical)) DOC (doctor) GP (General Practitioner (a doctor)) QUACK (GP or doctor) 911 (emergency services number in the US) 999 (emergency services number in the UK) A&E (Accident and Emergency)