Table 2 Summary of PET performance

Radial resolution*

Axial center

0.82 mm

0.91 mm

Sensitivity

100–900 keV

6.30%

10.4%

250–750 keV

4.44%

7.25%

350–650 keV

3.31%

5.13%

400–600 keV

2.91%

4.46%

Count-rate performance (250–750 keV)

Peak NECR

249 kcps

349 kcps

Activity at peak NECR

44.9 MBq

31.3 MBq

Scatter fraction

17.4%

20%

IQ

Uniformity

4.43%

3.89%

RC at 1, 2, 3, 4, and 5 mm rod diameters

0.06, 0.55, 0.79, 0.84, and 0.90

0.14, 0.62, 0.79, 0.91, and 0.95

SOR air

5.54%

3.56%

SOR water

4.10%

3.60%