ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Brain scan. False-colour magnetic resonance imaging (MRI) scan of a human head containing a healthy brain, seen in horizontal view. At upper frame, the two eyeballs can be seen. Between the eyes is the nasal cavity containing the concha, thin scroll- like bones. MRI scanning is a diagnostic technique in which a powerful electromagnet and radio waves create cross-section images of body regions.
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