Figure 1.

FDG PET data acquisition protocol. Group A (n = 58): minimum 6 h’ fasting before FDG PET studies. Group B (n = 24): minimum 18 h’ fasting with low-carbohydrate diet. Both groups had unfractionated heparin (UFH) administration 15 min prior to FDG injection. Scans were performed at 60 min after the administration of FDG. Blood samples were obtained before and 15 min after UFH administration to measure immunoreactive insulin (IRI) and free fatty acids (FFA). Fasting plasma glucose (FPG) level was measured before UFH injection