Low-cost LED-based Photo-CIDNP Enables Biocompatible Hyperpolarization of (19) F for NMR and MRI at 7 T and 4.7 T.
Low-cost LED-based Photo-CIDNP Enables Biocompatible Hyperpolarization of (19) F for NMR and MRI at 7 T and 4.7 T.
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DOI:
10.1002/cphc.201800570
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发表时间:
2018-10-05
期刊:
影响因子:
--
通讯作者:
Plaumann M
中科院分区:
文献类型:
--
作者:
Bernarding J;Euchner F;Bruns C;Ringleb R;Müller D;Trantzschel T;Bargon J;Bommerich U;Plaumann M
Substrates containing 19F can serve as background‐free reporter molecules for NMR and MRI. However, in vivo applications are still limited due to the lower signal‐to‐noise ratio (SNR) when compared with 1H NMR. Although hyperpolarization can increase the SNR, to date, only photo‐chemically induced dynamic nuclear polarization (photo‐CIDNP) allows for hyperpolarization without harmful metal catalysts. Photo‐CIDNP was shown to significantly enhance 19F NMR signals of 3‐fluoro‐DL‐tyrosine in aqueous solution using flavins as photosensitizers. However, lasers were used for photoexcitation, which is expensive and requires appropriate protection procedures in a medical or lab environment. Herein, we report 19F MR hyperpolarization at 4.7 T and 7 T with a biocompatible system using a low‐cost and easy‐to‐handle LED‐based set‐up. First hyperpolarized 19F MR images could be acquired, because photo‐CIDNP enabled repetitive hyperpolarization without adding new substrates.
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发表时间:
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期刊:
MAGNETIC RESONANCE INSIGHTS
影响因子:
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