Author/Authors :
Cabello، نويسنده , , J. and Barrillon، نويسنده , , P. and Barrio، نويسنده , , J. and Bisogni، نويسنده , , M.G. and Del Guerra، نويسنده , , A. and Lacasta، نويسنده , , C. and Rafecas، نويسنده , , M. and Saikouk، نويسنده , , H. and Solaz، نويسنده , , C. and Solevi، نويسنده , , P. and de La Taille، نويسنده , , C. and Llosل، نويسنده , , G.، نويسنده ,
Abstract :
Sensitivity and spatial resolution are the two main factors to maximize in emission imaging. The improvement of one factor deteriorates the other with pixelated crystals. In this work we combine SiPM matrices with monolithic crystals, using an accurate γ - ray interaction position determination algorithm that provides depth of interaction. Continuous crystals provide higher sensitivity than pixelated crystals, while an accurate interaction position determination does not degrade the spatial resolution. Monte Carlo simulations and experimental data show good agreement both demonstrating sub-millimetre intrinsic spatial resolution. A system consisting in two rotating detectors in coincidence is currently under operation already producing tomographic images.
Keywords :
PET , Monolithic crystals , high resolution , Position determination , SiPM
