RPC-PET: A new very high resolution PET technology

• Tipo: Artigo em Revista Científica Internacional
• Data: 2006

Autores

Blanco, A (Autor) Outra; Carolino, N (Autor) Outra; Correia, CMBA (Autor) Outra; Fazendeiro, L (Autor) Outra; Ferreira, NC (Autor) Outra; Marques, MFF (Autor) Outra; Marques, RF (Autor) Outra; Fonte, P (Autor) Outra; Gil, C (Autor) Outra; Macedo, MP (Autor) Outra

Revista

Título: IEEE Transactions on Nuclear Science

Vol. 53 Nº 1

Páginas: 2489-2494

ISSN: 0018-9499

Editora: IEEE

Indexação

ISI Web of Knowledge - 44 Citações

Scopus - 46 Citações

Outras Informações

ID Authenticus: P-004-GTS

DOI: 10.1109/tns.2006.876005

Abstract (EN): In this paper, we present experimental and simulated results from a first prototype of a positron emission tomography (PET) system based on the resistive plate chamber (RPC) technology-a gaseous particle detector. developed for high energy physics. The prototype is aimed at validating the expectations, derived from simulations, of a system with submillimeter spatial image resolution and no parallax error, which may be useful for the imaging of small animals. By imaging a point-like Na-22 source in the transaxial plane, an intrinsic spatial resolution of 0.52 mm FWHM was demonstrated for a system diameter of 60 mm, validating positron range simulations by other authors. A corresponding image spatial resolution of 0.51 mm FWHM was obtained using the standard algorithm of filtered backprojection (FBP) and 0.31 mm FWHM after reconstruction by an ML-EM type algorithm. An optimized complete system was simulated to evaluate sensitivity and system count rate performance for the imaging of mice, suggesting a sensitivity up to 2.1% at the center of the field of view and a peak noise equivalent count rate (NECR) up to 320 Kcps for a total activity of 88 MBq in the phantom.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6