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Active MRI Shows How Joints Work

Since its introduction in the 1980s, magnetic resonance imaging machines, commonly known as MRI scanners, have become a highly valuable tool in diagnostic medicine.  Researchers in California now say they have developed a new method that enables them to see moving images of body joints.  With the MRI scanner, the part of the patient’s body that needs to be observed is exposed to a very strong magnetic field which excites hydrogen atoms in its tissues. Different tissues emit...

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