Luc De Nil, of the University of Toronto, has been poring over stutterers' brains using positron emission tomography and functional magnetic resonance imaging.
There's a team of scientists at a private university in Georgia who are using magnetic resonance imaging, MRI technology, to try to discover just that.
Doctors had Burkhart think about moving his hand while researchers took functional magnetic resonance imaging (fMRI) scans to light up key brain areas.
The research on sleeping position affecting glymphatic transport is very limited, but this 2015 study had rodents sleep on either their side, back or stomach and were monitored via magnetic resonance imaging.
So liquid Helium is used for magnets when you need very powerful magnets, and for example, they're used magnets from magnetic resonance imaging in hospitals.
Doctors might also use magnetic resonance imaging, or MRI's, that produce finer images of soft tissue, to assist in better outlining a tumor's shape and location.