“Emerging research suggests gadolinium-based contrast agents, injected in a patient’s veins to brighten tissues in MRI images, accumulate in the brain.”
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Vikas Gulani, Fernando Calamante, Frank G Shellock, Emanuel Kanal, Scott B Reeder. Gadolinium deposition in the brain: summary of evidence and recommendations. The Lancet Neurology, 2017; 16 (7): 564 DOI: 10.1016/S1474-4422(17)30158-8