LYSO (Lu 1.8Y.2SiO5:Ce) is a Cerium doped Lutetium based scintillation crystal that offers high density and short decay time. It is ideal for applications that require higher throughput, better timing and energy resolution, including time-of-flight PET. PET applications have traditionally used arrays of BGO. LYSO crystal competes directly on density and surpasses BGO on energy resolution, timing and throughput.
An engineered version of LYSO has recently been introduced which offers up to 20% more light yield and 6% better energy resolution than traditional LYSO. The 1/e decay time is 36ns for engineered LYSO crystal, which is much shorter than the decay time of BGO and traditional LYSO.
Non-hygroscopic material that can be supplied as pixels or pixellated array
|Attenuation length for 511keV (cm)||1.2|
|Energy resolution [%] @ 662 keV *||8.0%|
|Wavelength of emission max [nm]||420|
|Refractive index @ emission max||1.81|
|Decay time [ns]||36|
|Light yield [photons/MeV] *||33200|
*Typical values tested using 1cm3 material against a calibrated standard; actual results can vary depending upon crystal size, shape and other factors.
Engineered LYSO is currently in pre-commercialization phase and material performance subject to change.