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Can we see the living brain? A review on in vivo visualization of the brain

imaging. Hannah Devlin, with additional contributions by Irene Tracey, Heidi Johansen-Berg and Stuart Clare from the Department of Clinical Neurology, University of Oxford, gave a most concise overview on the physics of MRI. The cylindrical tube of an MRI scanner houses a very powerful electro-magnet. A typical research scanner has a field strength of 3 tesla (T), about 50,000 times greater than the Earth’s magnetic field. The magnetic field inside the scanner affects the magnetic nuclei of atoms. Normally atomic nuclei are randomly oriented but under the influence of

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