Main part of a prototype Nuclear Magnetic Resonance machine, Europe, 1970-1975
This is the magnet and electronic circuit for a prototype Nuclear Magnetic Resonance (NMR) machine used in medicine, commonly called MRI (Magnetic Resonance Imaging). MRI uses NMR signals that build up a picture of the human body by using high frequency radio waves. MRI does not expose the body to radiation or invasive surgery and it can image soft tissues more effectively than X-ray-based methods.
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Glossary: NMR machine
Magnetic Resonance Imaging (MRI). A technique for producing high quality images of internal organs and tissues. MRI uses radio waves to achieve its results. It is particularly effective in detecting cancers.
Nuclear magnetic resonance is a technique used to detect what chemicals make up a sample containing unknown materials, or proportions of material. The sample is exposed to radio waves, and the frequency of electromagnetic energy that the sample absorbs is recorded. Because different atoms absorb unique frequencies of radiation, it is possible to determine what sort of atoms are present in the sample. NMR is now known as Magnetic Resonance Imaging (MRI).