Invention Grant
- Patent Title: Lutetium oxyorthosilicate scintillator having improved scintillation and optical properties and method of making the same
- Patent Title (中): 具有改善的闪烁和光学性质的氧化偏硅酸钇钇和其制备方法
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Application No.: US11842813Application Date: 2007-08-21
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Publication No.: US08278624B2Publication Date: 2012-10-02
- Inventor: Merry A. Koschan , Charles L. Melcher , Piotr Szupryczynski , A. Andrew Carey
- Applicant: Merry A. Koschan , Charles L. Melcher , Piotr Szupryczynski , A. Andrew Carey
- Applicant Address: US PA Malvern US TN Knoxville
- Assignee: Siemens Medical Solutions USA, Inc.,University of Tennessee Research Foundation
- Current Assignee: Siemens Medical Solutions USA, Inc.,University of Tennessee Research Foundation
- Current Assignee Address: US PA Malvern US TN Knoxville
- Agent Peter Kendall
- Main IPC: G01T1/20
- IPC: G01T1/20 ; C09K11/08 ; C30B15/00
Abstract:
LSO scintillation crystals with improved scintillation and optical properties are achieved by controlled co-doping a LSO crystal melt with amounts of cerium and an additional codopant such as calcium or other divalent cations. Crystal growth atmosphere is optimized by controlling the amount of oxygen in the atmosphere. Zinc is added as an additional material to restabilize crystal growth where calcium co-dopant is added. The decay time of the scintillation crystal can be controlled by controlling the concentration of co-dopant added.
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