|MadSci Network: Medicine|
Non oxygen bound hemoglobin has magnetic properties - and has a slight dipole moment. Oxygen bound hemoglobin does not. A diagnostic technique of MRI called functional MRI relies on this change of properties to diagnose an interesting assortment of conditions. Functional Magnetic Resonance Imageing: (fMRI) http://www.musc.edu/psychiatry/fnrd/primer_fmri.htm http://www.neuroguide.com/gregg.html Skeptical Inquirer: http://www.csicop.org/si/9807/magnet.html
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