Jun 13 – 15, 2012
LAL Orsay
Europe/Paris timezone

Application of continuous crystals and SiPM arrays to PET and Compton detectors

Jun 13, 2012, 12:15 PM
1h 45m
Hall (LAL Orsay)

Hall

LAL Orsay

Poster Posters A

Speaker

Dr Gabriela Llosa (IFIC-Valencia)

Description

Silicon Photomultipliers (SiPMs) offer an alternative to PMTs that allow the implementation of innovative detector types. Continuous scintillator crystals coupled to SiPM arrays provide higher efficiency than pixellated crystals. We are applying this approach in two different medical imaging fields with successful results. The use of SiPM arrays makes it possible stacking several detector layers in the development of a Compton telescope for dose monitoring in hadron therapy within the European project ENVISION. The prototype under development consists of a stack of three LaBr3 crystals coupled to a SiPM arrays. Tests with two detectors in time coincidence have been carried out, each one consisting of a 16mm x 18mm x 5mm crystal (one LaBr3 and one LYSO) coupled to a SiPM array from Hamamatsu, and employing the SPIROC1 ASIC as readout electronics. Imaging tests are ongoing, and larger detectors are under development. A small animal PET prototype scanner has been developed, comprising two rotating heads. Each head is composed of a 12mm x 12mm LYSO crystal of 5 or 10 mm thickness coupled to a monolithic, 64 pixel SiPM matrix. The MAROC2 ASIC is employed as front-end electronics. Images of one and two point sources have been reconstructed with a FWHM of 0.7 mm.

Primary author

Dr Gabriela Llosa (IFIC-Valencia)

Co-authors

Mr Carles Solaz (IFIC-Valencia) Carlos Lacasta Llacer (Universidad de Valencia (ES)) Dr Christophe De La Taille (Inst. Nat. Phys. Nucl. & Particules (IN2P3)-Universite de Paris) Mr John Barrio (IFIC-Valencia) Dr John E. Gillam (IFIC-Valencia) Jorge Cabello (University of Valencia) Dr Josep F. Oliver (IFIC-Valencia) Mr Ludovic Raux (Laboratoire de l'Accélérateur Linéaire) Dr Magdalena Rafecas (Instituto de Fisica Corpuscular (IFIC), Universidad de Valencia/CSIC) Mr Marco Trovato (IFIC-Valencia) Maria Giuseppina Bisogni (Univ. + INFN) Pierre Andreas Barrillon (Universite de Paris-Sud 11 (FR)) Stéphane Callier (OMEGA / IN2P3 - CNRS) Mrs Vera Stankova (IFIC-Valencia) alberto Del Guerra (University of Pisa)

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