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Turco, Anna (2012) Monte Carlo simulations of a small-animal PET scanner. Analysis of performances and comparison between camera designs. [Magistrali biennali]

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Abstract

The work analyzes the performances (scatter fraction, spatial resolution, sensitivity, image quality) obtained from a 10- detectors small-animal PET, simulated via Geant4 Application for Emission Tomography (GATE), in comparison with other camera designs. Particular attention is given to the comparison with the 12-detectors miniPET II, already built and working, with the ultimate goal to understand if the removal of two detectors would substantially affect performances. Results obtained show a clear improvement in count rate and scatter fraction (-4% with respect to miniPET II), as well as in sensitivity (maximum value obtained at the center of the camera with 10.91 cps/kBq); spatial resolution is as good as 1.58 mm FWHM in the transaxial plane, only 10% higher than miniPET II, and is confirmed by image quality tests on a mini Derenzo phantom. Results are encouraging and speak in favour of 10-detectors design

Item Type:Magistrali biennali
Uncontrolled Keywords:monte carlo methods, simulations, imaging, PET, small-animal PET
Subjects:Area 09 - Ingegneria industriale e dell'informazione > ING-INF/06 Bioingegneria elettronica e informatica
Codice ID:40188
Relatore:Ruggeri, Alfredo
Data della tesi:17 July 2012
Biblioteca:Polo di Ingegneria > Biblioteca di Ingegneria dell'Informazione e Ingegneria Elettrica "Giovanni Someda"
Tipo di fruizione per il documento:on-line per i full-text

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