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  • MRI stands for magnetic resonance imaging. MRI's help physicians diagnose and treat medical conditions.
  • MRI's are used to recognize injuries such as brain tumors, torn ligaments, tendonitis, cancer, dementia, and infections.
  • During an MRI scan, you lie in a strong magnetic field and radio-frequency waves are directed at your body. This produces detailed images of the inside of your body.
  • Most of the human body is made up of water molecules, which consist of hydrogen and oxygen atoms. At the center of each hydrogen atom there is a proton. Protons are like magnets, being very sensitive to magnetic fields. The powerful magnets in the scanner makes the protons in your body line up in the same direction.
  • When you lay inside an MRI machine, the magnetic field temporarily realigns hydrogen atoms in your body. Radio waves cause these aligned atoms to produce very faint signals, which are used to create cross-sectional MRI images.
  • The average cost for a hospital to buy an MRI machine is about 1.2 to 3 million dollars. To have an MRI done on you it would cost most people around 1,000 to 1,2000 dollars.
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