The availability of LaBr(3):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 LaBr(3):Ce crystals are available in a continuous shape covering up to 10 x 10 cm(2) with a thickness of 1 cm, in contrast, serious concerns are arising in pixellated manufacturing. With the aim of verifying the potentials introduced by LaBr(3):Ce for SPET imaging, two small gamma cameras based on Anger camera principle have been assembled and imaging performances were compared. Two crystals of LaBr(3):Ce and NaI(Tl) with the same detection area (5 x 5 cm(2)) 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 LaBr(3):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. (c) 2006 Elsevier B.V. All rights reserved.
Ce doped lanthanum tri-bromide SPET scanner for molecular imaging / Pani, Roberto; Pellegrini, Rosanna; Cinti, Maria Nerina; P., Bennati; M., Betti; F., Vittorini; M., Mattioli; G., Trotta; V., Orsolini Cencelli; R., Scafe; F., Navarria; D., Bollini; G., Baldazzi; G., Moschini; F., De Notaristefani. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - STAMPA. - 571:1-2 SPEC. ISS.(2007), pp. 187-190. (Intervento presentato al convegno 1st International Conference on Molecular Imaging Technology tenutosi a Marseille, FRANCE nel MAY 09-12, 2006) [10.1016/j.nima.2006.10.059].
Ce doped lanthanum tri-bromide SPET scanner for molecular imaging
PANI, Roberto;PELLEGRINI, Rosanna;CINTI, Maria Nerina;
2007
Abstract
The availability of LaBr(3):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 LaBr(3):Ce crystals are available in a continuous shape covering up to 10 x 10 cm(2) with a thickness of 1 cm, in contrast, serious concerns are arising in pixellated manufacturing. With the aim of verifying the potentials introduced by LaBr(3):Ce for SPET imaging, two small gamma cameras based on Anger camera principle have been assembled and imaging performances were compared. Two crystals of LaBr(3):Ce and NaI(Tl) with the same detection area (5 x 5 cm(2)) 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 LaBr(3):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. (c) 2006 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
