고려대학교

초록/요약

Improving the spatial resolution without sacrificing the sensitivity is one of the most challenging goals for small animal PETs. The 3-layer configuration that we propose consists of 7mm long LuYAP and 7mm long LSO crystals aligned with each other and 5mm long LSO crystals with an offset of 1.25mm. To estimate the improvement of the spatial resolution, we also simulated the 2-layer configuration of LSO and LuYAP, each with 9.5mm length. The Monte-Carlo simulation shows that the 3-layer configuration has a potential to improve the spatial resolution by about 20-30% at 40.0mm from the central axis over the 2-layer configuration. We also present preliminary results of the test to study the 3-layer configuration.