Position sensitive photomultiplier tube (PS-PMT) represents a technological
improvement in the development of new concept gamma cameras based on the p
rinciple of a single tube. Very recently, a new compact PS-PMT, Hamamatsu R
7600-C12, has been developed. The PS-PMT has 11 stages of metal channel dyn
odes and 6(x) + 6(y) crossed plate anodes in a 25.7mm square X 20mm high me
tal can package, where the effective area is 22 x 22mm(2). Tests of spatial
resolution, spatial linearity, gain uniformity and timing resolution were
carried out by coupling the PS-PMT to the LSO an GSO scintillators in terms
of applicability to Positron Emission Tomography(PET) system. High spatial
resolution of about 1.4mm is obtained by using LSO crystals coupled to the
PS-PMT, and the good spatial linearity, gain uniformity and timing resolut
ion are also obtained.