Transparent ceramic garnet scintillator detector for positron emission tomography

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In one embodiment. The process of claim h wherein the method is from 3 ± 10%, i is 2 ± 10%, j is 3 ± 10%, A comprises at least one rare earth element, B comprises aluminum and/or gallium, C comprises aluminum and/or gallium. A. h Bi Cj O12 The method includes forming a powder having a composition of. The method further comprises the step of consolidating the powder to form an optically transparent ceramic and applying at least one thermodynamic process condition during consolidation to reduce oxygen and/or thermodynamically reversible defects in the ceramic. To another embodiment, the scintillator is (Gd). 3 - a-c Ya )x (Ga)5 - b Alb )y O12 Dc Include and wherein a is between about 0.05 and about 2 and b is between about 1 and about 3, and x is between about 2.8 and about 3.2. y Is between about 4.8 and about 5.2, c is between about 0.003 and about 0.3, D is a dopant, and the scintillator is an optically transparent ceramic scintillator having physical properties formed in the consolidated ceramic powder in an oxidizing atmosphere.