Author/Authors :
Anulli، نويسنده , , F. and Balla، نويسنده , , A. and Bencivenni، نويسنده , , G. and Corradi، نويسنده , , G. and D’Ambrosio، نويسنده , , C. and Domenici، نويسنده , , D. and Felici، نويسنده , , G. and Gatta، نويسنده , , M. and Morone، نويسنده , , M.C. and Murtas، نويسنده , , F. and Schillaci، نويسنده , , O.، نويسنده ,
Abstract :
A Gamma Camera for medical applications 10 × 10 cm 2 has been built using a triple GEM chamber prototype. The photon converters placed in front of the three GEM foils, has been realized with different technologies. The chamber, High Voltage supplied with a new active divider made in Frascati, is readout through 64 pads, 1 mm 2 wide, organized in a row of 8 cm long, with LHCb ASDQ chip. This Gamma Camera can be used both for X-ray movie and PET-SPECT imaging; this chamber prototype is placed in a scanner system, creating images of 8 × 8 cm 2 . Several measurements have been performed using phantom and radioactive sources of Tc 99 m ( 140 keV ) and Na 22 ( 511 keV ) . Results on spatial resolution and image reconstruction are presented.
Keywords :
GEM , Gamma Camera , MEDICAL IMAGING , medical application
