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The magnet in an MRI system uses a unit of measure known as a tesla. The magnets in use today in MRI are in the 0.5 - 2.5 tesla range. There are much more powerful magnets out there. In fact, some up to 60 tesla which are used in research. The magnetic force exerted on an object increases many times as it nears the magnet. Imagine standing 15 feet away from the magnet with a large pipe wrench in your hand. You might feel a slight pull. Take a couple of steps closer and that pull is much stronger, when you get to within 3 feet of the magnet, the wrench likely is pulled from your grasp.
The MRI machine also applies an RF or radio frequency pulse that is specific only to hydrogen...
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