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NaDyF4Nanoparticles as T2Contrast Agents for Ultrahigh Field Magnetic Resonance Imaging
Abstract
A major limitation of the commonly used clinical MRI contrast agents (CAs) suitable at lower magnetic field strengths (<3.0 T) is their inefficiency at higher fields (>7 T), where next-generation MRI scanners are going. We present dysprosium nanoparticles (β-NaDyF4 NPs) as T2 CAs suitable at ultrahigh fields (9.4 T). These NPs effectively enhance T2 contrast at 9.4 T, which is 10-fold higher than the clinically used T2 CA (Resovist). Evaluation of the relaxivities at 3 and 9.4 T show that the T2 contrast enhances with an increase in NP size and field strength. Specifically, the transverse relaxivity (r2) values at 9.4 T were ∼64 times higher per NP (20.3 nm) and ∼6 times higher per Dy(3+) ion compared to that at 3 T, which is attributed to the Curie spin relaxation mechanism. These results and confirming phantom MR images demonstrate their effectiveness as T2 CAs in ultrahigh field MRIs.
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Citations
Cites
Multimodality Imaging Probes: Design and Challenges
Louie, A. (2010) · Chemical Reviews · doi:10.1021/cr9003538 · Cited by 1,044
Cited by
Nanoparticles in magnetic resonance imaging: from simple to dual contrast agents
Busquets, M. A., Estelrich, J., & Sánchez-Martín, M. J. (2015) · International Journal of Nanomedicine · doi:10.2147/ijn.s76501 · Cited by 622
Metadata
- Authors
- Das, G. K., Johnson, N. J. J., Cramen, J., Blasiak, B., Latta, P., Tomanek, B., & van Veggel, F. C. J. M.
- Venue
- The Journal of Physical Chemistry Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-02-07
- Volume
- 3
- Issue
- 4
- Pages
- 524-529
- ISSN
- 1948-7185 (ISSN-L)
- OpenAlex
- W2051562971
- Cited by
- 172
- References
- 1
- FWCI
- 6.95
- Type
- journal article
- Language
- en
- Open access
- closed
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- Das, G. K., Johnson, N. J. J., Cramen, J., Blasiak, B., Latta, P., Tomanek, B., & van Veggel, F. C. J. M. (2012). NaDyF4Nanoparticles as T2Contrast Agents for Ultrahigh Field Magnetic Resonance Imaging. The Journal of Physical Chemistry Letters. https://doi.org/10.1021/jz201664h
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