Prism xp2000

PET/CT data were obtained by a Discovery VCT PET/CT scanner (GE Healthcare). All patients received an injection of 3 MBq NaF per kg body weight after having fasted for 6 h. Image acquisition started approximately 60 min after tracer injection. A diagnostic contrast-enhanced CT scan (64-slice helical, 120 kV, “smart mA” maximum 400 mA) was obtained from the base of the skull to the mid-thigh. The CT slice thickness used in the analysis was 3.75 mm. A PET scan with an acquisition time of 2.5 min per bed position was obtained from the same region.
Whole-body planar bone scans with anterior and posterior views were acquired using a dual head ɣ camera (Skylight or PRISM XP2000, Philips Medical, Surrey) with LEHR collimator, energy window 140 keV ±20%, matrix 256×1024, and scan speed 14 cm/min. All patients received 600 MBq Tc-99m HDP and imaging acquisition was performed 3 h postinjection.

The patients were injected with 700 MBq (0.019 Ci) Technetium-99m-3,3-disphosphono-1,2-propanodicarboxylic acid (Tc-99m-DPD) three to four hours prior to whole-body imaging. In the waiting period, the patients were asked to drink approximately 1 liter of clear liquids. The scan was performed on a Skylight or PRISM XP2000 gamma camera (Philips Medical, Surrey, UK) with the following parameters: LEHR collimator, energy window 140 keV ± 20%, matrix 256 x 1024, scan speed 14 cm/min.