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Properties of commonly used crystals for PET scanners
| BGO | GSO | LSO | LYSO | |
|---|---|---|---|---|
| Density (g/cm3) | 7.1 | 6.7 | 7.4 | 7.4 |
| Attenuation length (mm) | 10.4 | 14.1 | 11.4 | 11.8 |
| Light output (photons/MeV) | 9000 | 8000 | 30,000 | 30,000 |
| Light decay time (ns) | 300 | 60 | 40 | 40 |
BGO = bismuth germanate, GSO = gadolinium oxyorthosilicate, LSO = lutetium oxyorthosilicate, LYSO = lutetium-yttrium oxyorthosilicate
