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Title: Very high position resolution gamma imaging with resistive plate chambers
Authors: Blanco, A. 
Carolino, N. 
Correia, C. M. B. A. 
Fazendeiro, L. 
Ferreira, Nuno C. 
Marques, M. F. Ferreira 
Marques, R. Ferreira 
Fonte, P. 
Gil, C. 
Macedo, M. P. 
Keywords: Gaseous detectors; Photodetectors
Issue Date: 2006
Citation: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 567:1 (2006) 96-99
Abstract: In this study we present experimental results from a first prototype of a positron emission tomography system based on the resistive plate chamber (RPC) technology. The system is composed of two counting heads, each one containing 16 single-gap RPC detectors capable of detecting the photon interaction point in the transaxial plane. Uniformity studies were performed for image resolution and sensitivity, yielding a rather uniform image resolution close to 0.3 mm FWHM across the field of view. The contribution of the photons noncolinearity effect to the intrinsic spatial resolution was also studied, causing a variation from 0.52 to 0.63 mm when the system diameter ranges from 60 to 120 mm, in agreement with calculations.
DOI: 10.1016/j.nima.2006.05.074
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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