Phys.org -
20 Oct 2015 17:07

Magnetoencephalography, or MEG, is a non-invasive technique for investigating human brain activity for surgical planning or research, and has been used in hospitals and universities for more than 30 years. It's just one of the many powerful technologies made possible by a tiny device called a SQUID, short for superconducting quantum interference device. SQUIDs can detect minuscule magnetic fields, useful in applications ranging from medical imaging of soft tissue to oil prospecting.
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