Organic radical contrast agents for magnetic resonance imaging.

Organic radical contrast agents for magnetic resonance imaging.
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DOI:
10.1021/ja3079829
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发表时间:
2012-09-26
影响因子:
15
通讯作者:
Rajca, Suchada
Rajca, Suchada
中科院分区:
化学1区
文献类型:
--
作者:
Rajca, Andrzej;Wang, Ying;Boska, Michael;Paletta, Joseph T.;Olankitwanit, Arnon;Swanson, Michael A.;Mitchell, Deborah G.;Eaton, Sandra S.;Eaton, Gareth R.;Rajca, Suchada

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We report a molecular design that provides an intravenously injectable organic radical contrast agent (ORCA) that has molecular r1 ≈ 5 mM−1s−1. The ORCA is based on spirocyclohexyl nitroxide radicals and polyethylene glycol chains conjugated to a generation 4 polypropylenimine dendrimers scaffold. The metal-free ORCA has a long shelf-life and provides selectively enhanced MRI in mice for over 1 h.
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