Author/Authors :
Di Domenico، نويسنده , , G and Motta، نويسنده , , A and Zavattini، نويسنده , , G and Guerra، نويسنده , , A.Del and Damiani، نويسنده , , Evelina and Bettinardi، نويسنده , , V and Gilardi، نويسنده , , M.C، نويسنده ,
Abstract :
A dedicated small animal PET scanner, YAPPET, was designed and built at Ferrara University. Each detector consists of a 20×20 matrix of 2×2×30 mm3 YAP:Ce finger-like crystals glued together and directly coupled to a Hamamatsu position sensitive photomultiplier. The scanner is made from four detectors positioned on a rotating gantry at a distance of 7.5 cm from the center and the field of view (FOV) is 4 cm both in the transaxial direction and in the axial direction. The system operates in 3D acquisition mode. The performance parameters of YAPPET scanner such as spatial, energy and time resolution, as well as its sensitivity and counting rate have been determined. The average spatial resolution over the whole FOV is 1.8 mm at FWHM and 4.2 mm at FWTM. The sensitivity at the center is 640 cps/μCi.
