Responders, Nonresponders and Brain Glucose Metabolism (IMAGE)
Caption
PET scans of patients successfully treated with vagus nerve stimulation show marked increases in cerebral glucose metabolism after 12 months of treatment (bottom image, red/orange area in yellow circle) in parts of the brainstem thought to be critical in depression. In nonresponders, glucose metabolism decreased in the same brain region (top image, blue/green area in yellow circle).
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Copyright Brain Stimulation 2013, with permission
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