Table 2 Properties of part scintillators used in PET [18, 123]
From: Technical opportunities and challenges in developing total-body PET scanners for mice and rats
Properties | BGO | L(Y)SO | GSO | GAGGa |
|---|---|---|---|---|
Density (g/cc) | 7.1 | 7.4 | 6.7 | 6.6 |
Effective atomic number | 73 | 66 | 59 | – |
Decay time (ns) | 300 | 40 | 60 | 50–150 |
Light yield (photons/MeV) | 8000 | 20,000–30,000 | 12,000–15,000 | 30,000–50,000 |
Attenuation length at 511 keV (mm) | 10.4 | 11.4 | 14.1 | – |
Photoelectric fraction (%) | 40 | 32 | 25 | – |
Index of refraction | 2.15 | 1.82 | 1.85 | 1.91 |
Peak emission (nm) | 480 | 420 | 430 | 520–530 |
Intrinsic radiation | No | Yes | No | No |