1. Department of Neuroradiology, Heidelberg University Hospital , 69120 Heidelberg , Germany
2. Department of Endocrinology, Diabetology and Clinical Chemistry (Internal Medicine 1), Heidelberg University Hospital , 69120 Heidelberg , Germany
3. German Center for Diabetes Research, DZD , 85764 München-Neuherberg , Germany
4. Institute for Diabetes and Cancer (IDC), Helmholtz Diabetes Center, Helmholtz Center , Munich, 85764 Neuherberg , Germany
5. Department of Neurology, Heidelberg University Hospital , 69120 Heidelberg , Germany
6. Joint Heidelberg-IDC Translational Diabetes Program, Inner Medicine 1, Heidelberg University Hospital , 69120 Heidelberg , Germany
7. Division of Experimental Radiology, Department of Neuroradiology, Heidelberg University Hospital , 69120 Heidelberg , Germany
8. Department of Radiology, German Cancer Research Center , 69120 Heidelberg , Germany