Fig. 2

Fluorodeoxyglucose positron emission tomography (FDG-PET) findings. The initial FDG-PET scan (08/2010) depicted a global cortical hypometabolism of the left hemisphere, and, to a lesser extent, also of the right hemisphere; on the right side, hypometabolism was primarily located in the temporal lobe. Cerebellar hypometabolism was pronounced on the right side (most likely indicating crossed cerebellar diaschisis). The lower FDG-PET scan was acquired after successful immunosuppressive therapy (01/2011), indicating a nearly regular cerebral metabolism. A slight frontal hypometabolism remained most likely secondary due to frontal accentuated atrophy. Pronounced occipital metabolism is explainable by scan acquisition with open eyes. Both FDG-PET scans were performed at the Department of Nuclear Medicine of the University Hospital Freiburg after injection of 240 MBq 18FDG each (Gemini TF64 PET scanner, Philips Healthcare, The Netherlands)