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Contrast agents for MRI
    
  Appears In
      
      New NIST Measurements Aim to Advance and Validate Portable MRI Technology
      
            NIST researcher Sam Oberdick explored contrast agents for low-field MRI machines. His group tested iron oxide nanoparticles at lower-strength magnetic fields. These nanoparticles inside the liquid solution (pictured here) are magnetic and are pulled toward the magnet through a combination of magnetic interactions and surface tension.

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