发明名称 |
NMR POLARIZATION MONITORING COILS, HYPERPOLARIZERS WITH SAME, AND METHODS FOR DETERMINING THE POLARIZATION LEVEL OF ACCUMULATED HYPERPOLARIZED NOBLE GASES DURING PRODUCTION |
摘要 |
Hyperpolarizers which produce hyperpolarized noble gases include one or more on-board NMR monitoring coils configured to monitor the polarization level o f the hyperpolarized gas at various production points in the polarized gas production cycle. A dual symmetry NMR coil is positioned adjacent the optica l pumping cell and is in fluid communication with a secondary reservoir in flu id communication with the polarized gas dispensing or exit flow path. This can measure the post-thaw polarization of the gas "on-board" the polarizer. Alternately or additionally, a NMR monitoring coil is assembled to the exit port portion of the optical pumping cell to give a more reliable indication of the polarization level of the gas as it flows out of the gas optical pumping cell. Another NMR monitoring coil can be positioned in a cryogenic bath adjacent a quantity of frozen polarized 129Xe to determine the polarization level of the frozen gas.
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申请公布号 |
CA2388827(A1) |
申请公布日期 |
2001.01.04 |
申请号 |
CA20002388827 |
申请日期 |
2000.06.22 |
申请人 |
MEDI-PHYSICS, INC. |
发明人 |
DRIEHUYS, BASTIAAN |
分类号 |
G01N24/00;A61B5/055;G01R33/28;G01R33/32;(IPC1-7):G01R33/28 |
主分类号 |
G01N24/00 |
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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