Hyperpolarized lithium-6 as a sensor of nanomolar contrast agents.
Hyperpolarized lithium-6 as a sensor of nanomolar contrast agents.
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DOI:
10.1002/mrm.21952
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发表时间:
2009-06
影响因子:
3.3
通讯作者:
Gruetter, Rolf
中科院分区:
文献类型:
--
作者:
van Heeswijk, Ruud B.;Uffmann, Kai;Comment, Arnaud;Kurdzesau, Fiodar;Perazzolo, Chiara;Cudalbu, Cristina;Jannin, Sami;Konter, Jacobus A.;Hautle, Patrick;van den Brandt, Ben;Navon, Gil;van der Klink, Jacques J.;Gruetter, Rolf
Lithium is widely used in psychotherapy. The 6Li isotope has a long intrinsic longitudinal relaxation time T1 on the order of minutes, making it an ideal candidate for hyperpolarization experiments. In the present study, we demonstrated that lithium-6 can be readily hyperpolarized within 30 min, while retaining a long polarization decay time on the order of a minute. We used the intrinsically long relaxation time for the detection of 500 nM contrast agent in vitro. Hyperpolarized lithium-6 was administered to the rat and its signal retained a decay time on the order of 70 s in vivo. Localization experiments imply that the lithium signal originated from within the brain and that it was detectable up to 5 min after administration. We conclude that the detection of sub-micromolar contrast agents using hyperpolarized NMR nuclei such as 6Li may provide a novel avenue for molecular imaging.
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影响因子:
11.4
作者:
CADE, JFJ
通讯作者:
CADE, JFJ
影响因子:
3.3
作者:
GRUETTER, R
通讯作者:
GRUETTER, R
影响因子:
2.2
作者:
Komoroski, RA;Pearce, JM;Newton, JEO
通讯作者:
Newton, JEO
影响因子:
2.5
作者:
Ramaprasad, S;Ripp, E;Lyon, M
通讯作者:
Lyon, M
影响因子:
2.5
作者:
van Heeswijk, Ruud B.;Laus, Sabrina;Gruetter, Rolf
通讯作者:
Gruetter, Rolf