Revisited position arithmetics for LaBr

R. Pani, F. Vittorini, M.N. Cinti, P. Bennati, R. Pellegrini, S. Ridolfi, R. Scafè, S. Lo Meo, M. Mattioli, F.L. Navarria, G. Moschini, A. Fabbri, E. D'Abramo, V. Orsolini Cencelli, D. Sacco

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Abstract

The development of the molecular imaging technique based on radiopharmaceuticals is requiring sophisticated devices with sub-millimeter spatial resolution and high detection efficiency. Recently, in the field of scintillation gamma camera, it has been demonstrated that continuous crystals may improve spatial resolution with respect to the use of scintillation arrays. In this work we propose a new algorithm that improves spatial resolution. It calculates the position from a single scintillation event by squaring the charge collected on a multi-anodes photomultiplier tube (MA-PMT). It is able to remove the position linearity distortion due to the light reflections and the truncations at the crystal edge. We present measurements from a compact gamma camera based on a 51 mm × 51 mm × 4.0 mm LaBr3:Ce continuous scintillation crystal, coupled to a MA-PMT Hamamatsu H8500. The results show a strong improvement in spatial resolution and confirm the high potential in using of LaBr continuous crystal for molecular imaging applications. © 2009 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)383 - 386
Number of pages4
JournalNuclear Physics B - Proceedings Supplements
Volume197
Issue number1
DOIs
Publication statusPublished - 15 Dec 2009
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics

Cite this

Pani, R., Vittorini, F., Cinti, M. N., Bennati, P., Pellegrini, R., Ridolfi, S., ... Sacco, D. (2009). Revisited position arithmetics for LaBr. Nuclear Physics B - Proceedings Supplements, 197(1), 383 - 386. https://doi.org/10.1016/j.nuclphysbps.2009.10.109