Ce doped lanthanum tri-bromide SPET scanner for molecular imaging

R. Pani, R. Pellegrini, M.N. Cinti, P. Bennati, M. Betti, F. Vittorini, M. Mattioli, G. Trotta, V. Orsolini Cencelli, R. Scafè, F. Navarria, D. Bollini, G. Baldazzi, G. Moschini, F. de Notaristefani

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Abstract

The availability of LaBr3:Ce crystals from St. Gobain has started various investigations in the field of medical imaging, in particular in PET, SPECT and Compton camera systems. At present LaBr3:Ce crystals are available in a continuous shape covering up to 10×10 cm2with a thickness of 1 cm, in contrast, serious concerns are arising in pixellated manufacturing. With the aim of verifying the potentials introduced by LaBr3:Ce for SPET imaging, two small γ cameras based on Anger camera principle have been assembled and imaging performances were compared. Two crystals of LaBr3:Ce and NaI(Tl) with the same detection area (5×5 cm2) and thickness of 5 and 1.5 mm, respectively were been integrally assembled with a H8500 Hamamatsu flat panel PMT. Through the thicker crystal, the LaBr3:Ce camera showed superior imaging and detection performances at 140 keV compared with the NaI(Tl) one, with 0.9 mm FWHM intrinsic spatial resolution, 8% FWHM energy resolution and 80% intrinsic detection efficiency. © 2006 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)187 - 190
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume571
Issue number1-2 SPEC. ISS.
DOIs
Publication statusPublished - 1 Feb 2007
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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