6.6K views · 54 reactions | Magnetic resonance imaging, commonly referred to as MRI, can take pictures of the inside of the body. An estimated 40 million MRIs happen each year in the United States, but most people don’t understand how they work. Scan through our latest How Do You Measure It page to learn more about MRIs: https://www.nist.gov/how-do-you-measure-it/how-does-mri-machine-work | National Institute of Standards and Technology (NIST) | Facebook