Improving DOI information using 3-layer crystals for small animal PETs

S. J. Hong, J. S. Lee, K. S. Sim, S. M. Kim, D. H. Moon, B. Hong, K. S. Lee, J. W. Park, S. Park, M. C. Lee, J. G. Choe, J. T. Rhee

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


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 7 mm long Lu YAP and 7 nun long LSO crystals aligned with each other, and 5 mm long LSO crystals with an offset of 1.15 mm. The Lu YAP crystals are attached to Hamamatsu H7546B multi-anode PMTs, and the sensitive cells of which are aligned to match the 5 mm long LSO crystals. To estimate the improvement of the spatial resolution, we also simulated the 2-layer configuration of LSO and Lu YAP, each with a 9.5 mm length. The Monte-Carlo simulation shows that the 3-layer configuration has a potential to improve the spatial resolution by about 30-40% at 40.0 mm from the central axis over the 2-layer configuration. To study the 3-layer configuration, we started to test the 2-layer and 3-layer configurations and presented preliminary test results.

Original languageEnglish
Pages (from-to)2434-2438
Number of pages5
JournalIEEE Nuclear Science Symposium Conference Record
Publication statusPublished - 2004
Event2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors - Rome, Italy
Duration: 2004 Oct 162004 Oct 22

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging


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