Abstract
Surface-coating polymers contribute to nanoparticle-based magnetic resonance imaging (MRI) contrast agents because they can affect the relaxometric properties of the nanoparticles. In this study, polyaspartic acid (PASA)-coated ultrasmall Gd2 O3 nanoparticles with an average particle diameter of 2.0 nm were synthesized using the one-pot polyol method. The synthesized nanoparticles exhibited r1 and r2 of 19.1 and = 53.7 s−1 mM−1, respectively, (r1 and r2 are longitudinal and transverse water–proton spin relaxivities, respectively) at 3.0 T MR field, approximately 5 and 10 times higher than those of commercial Gd-chelate contrast agents, respectively. The T1 and T2 MR images could be obtained due to an appreciable r2 /r1 ratio of 2.80, indicating their potential as a dual-modal T1 and T2 MRI contrast agent.
| Original language | English |
|---|---|
| Article number | 8222 |
| Journal | Applied Sciences (Switzerland) |
| Volume | 11 |
| Issue number | 17 |
| DOIs | |
| State | Published - Sep 2021 |
Keywords
- Gadolinium oxide nanoparticle
- Magnetic resonance imaging
- Polyaspartic acid
- T and T dual-modal imaging
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