发明名称 |
Hole-trap-compensated scintillator material and computed tomography machine containing the same |
摘要 |
Afterglow in a luminescent material in which a significant factor in afterglow is the release of holes from hole traps in the scintillator material is substantially reduced by adding cerium as a hole-trapping species to the scintillator composition which successfully competes with the hole traps in the basic scintillator composition. In gadolinium gallium garnet activated with chromium, the addition of cerium in the range of 0.2 to 0.255 weight percent reduces afterglow in this manner while exhibiting excellent stability to x-ray damage after exposure to an initial pair of x-ray pulses.
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申请公布号 |
US5391876(A) |
申请公布日期 |
1995.02.21 |
申请号 |
US19940250725 |
申请日期 |
1994.05.27 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
TSOUKALA, VENETA G.;GRESKOVICH, CHARLES D. |
分类号 |
A61K49/04;C09K11/00;C09K11/77;C09K11/80;G01T1/20;G01T1/202;G01T1/29;(IPC1-7):G01T1/202 |
主分类号 |
A61K49/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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