Discovery ste 16 slice ct scanner

After fasting for at least 6 hours, the patients were administered 5 MBq/kg of FDG intravenously. The blood glucose level at the time of the FDG injection was <150 mg/dL in all patients. The patients were instructed to rest for 60 minutes and to urinate before being scanned. Whole-body PET/CT images were obtained with a Discovery ST 8-slice CT scanner or a Discovery STE 16-slice CT scanner (GE Healthcare, Milwaukee, WI, USA). Seven or eight frames (3 min/frame) of PET emission data were acquired in three-dimensional (3D) mode after a non-contrast CT scan from the base of the skull to the upper thigh (120 kV, 30–100 mA in the AutomA mode; section width = 3.75 mm). PET images were reconstructed using an iterative method (ordered-subsets expectation maximization with two iterations and 20 subsets, field of view = 600 mm, slice thickness = 3.27 mm) and attenuation-corrected non-contrast CT.

After fasting for at least 6 hours, patients were administered 5 MBq/kg ¹⁸F-FDG intravenously. The blood glucose level at the time of the ¹⁸F-FDG injection was < 8.3 mmol/L in all patients. Patients were instructed to rest comfortably for 60 min, and to urinate before the scan. Whole-body PET/CT images were obtained with a Discovery ST 8 slice CT scanner or Discovery STE 16 slice CT scanner (GE Healthcare, Milwaukee, WI, USA). Seven or eight frames (3 min/frame) of PET emission data were acquired in three-dimensional mode after a non-contrast CT scan from the base of the skull to the upper thigh (120 kV, 30–100 mA in the AutomA mode; section width = 3.75 mm). Emission PET images were reconstructed using an iterative method (ordered-subsets expectation maximization with two iterations and 20 subsets; field of view = 600 mm, slice thickness = 3.27 mm) and attenuation was corrected with noncontrast CT.