Transparent ceramic garnet scintillator detector for positron emission tomography

Cherepy, Nerine; Payne, Stephen A.; Seeley, Zachary; Cohen, Peter Carl; Andreaco, Mark S.; Schmand, Matthias J.

Title: Transparent ceramic garnet scintillator detector for positron emission tomography

Patent · Tue Jun 19 00:00:00 EDT 2018

OSTI ID:1459539

Cherepy, Nerine; Payne, Stephen A.; Seeley, Zachary; Cohen, Peter Carl; Andreaco, Mark S.; Schmand, Matthias J.

In one embodiment, a method includes forming a powder having a composition with the formula: A_hB_iC_jO₁₂, where h is 3.+-.10%, i is 2.+-.10%, j is 3.+-.10%, A includes one or more rare earth elements, B includes aluminum and/or gallium, and C includes aluminum and/or gallium. The method additionally includes consolidating the powder to form an optically transparent ceramic, and applying at least one thermodynamic process condition during the consolidating to reduce oxygen and/or thermodynamically reversible defects in the ceramic. In another embodiment, a scintillator includes (Gd_3-a-cY_a)_x(Ga_5-bAl_b)_yO₁₂D_c, where a is from about 0.05-2, b is from about 1-3, x is from about 2.8-3.2, y is from about 4.8-5.2, c is from about 0.003-0.3, and D is a dopant, and where the scintillator is an optically transparent ceramic scintillator having physical characteristics of being formed from a ceramic powder consolidated in oxidizing atmospheres.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC52-07NA27344

Assignee:: Lawrence Livermore National Security, LLC (Livermore, CA)

Patent Number(s):: 10,000,698

Application Number:: 15/064,509

OSTI ID:: 1459539

Resource Relation:: Patent File Date: 2016 Mar 08

Country of Publication:: United States

Language:: English

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