Summary of PET Subsystem Technical Specifications

DetectorScintillatorBismuth germanate
Crystal dimension2.32 × 2.32 × 9.4 mm
No. of crystals8 × 8 = 64
ScannerNo. of blocks180
No. of detector rings48
Crystals per ring240
Total no. of crystals11,520
Photomultipliers210 (19-mm diameter)
Transaxial FOV100 mm
Detector ring inner diameter165 mm
AFOV116 mm
Timing window12 ns
Data organizationNo. of 2D sinograms95
No. of 3D sinograms2,304
Sinogram size255 × 120
Sampling distance0.4 mm