Author/Authors :
Pani، نويسنده , , R. and Cinti، نويسنده , , M.N. and Pellegrini، نويسنده , , R. and Trotta، نويسنده , , C. and Trotta، نويسنده , , G. and Montani، نويسنده , , L. and Ridolfi، نويسنده , , S. and Garibaldi، نويسنده , , F. and Scafè، نويسنده , , R. and Belcari، نويسنده , , N. and Del Guerra، نويسنده , , A.، نويسنده ,
Abstract :
The first position sensitive PMT, Hamamatsu R2486, developed in 1985, represented a strong technological advance for gamma-ray imaging. Hamamatsu H8500 Flat Panel PMT is the last generation position sensitive PMT: extremely compact with 2 in. active area. Its main features are: minimum peripheral dead zone (1 mm) and height of 12 mm. It was designed to be assembled in array to cover large detection area. It can represent a technical revolution for many applications in the field of gamma-ray imaging as for example nuclear medicine. This tube is based on metal channel dynode for charge multiplication and 8×8 anodes for charge collection and position calculation. In this paper we present a preliminary evaluation of the imaging performances addressed to nuclear medicine application.
s aim we have taken into account two different electronic readouts: resistive chain with Anger Camera principle and multianode readout. Flat panel PMT was coupled to CsI(Tl) and NaI(Tl) scintillation arrays. The results were also compared with the first generation PSPMT.
Keywords :
Position sensitive photomultiplier , nuclear medicine imaging , Scintillation array , Flat panel photomultiplier
