Magnetic Map of the Brain After Concussion: What Hippocampal Imaging Revealed
A geologist walks along a mountain slope, running an instrument over the rocks. The instrument shows where iron ore lies beneath the surface and where the rock has cracked. A magnetic map of the brain works in much the same way: it reveals where iron has accumulated in the tissues and where the sheath of nerve fibers is damaged.
After a concussion, such imaging is especially important.