Table 1.
The r1 and r2 relaxivities and relaxivity ratio (r2/r1) of Fe3O4 MNNA and commercial contrast agents: Resovist (SH U 555 A), Feridex (AMI-25) and Supravist (SH U 555 C) measured at 3T [20].
| Materials | Surface functionality |
r1 (mM-1s-1) |
r2 (mM-1s-1) |
r2/r1 |
|---|---|---|---|---|
| Fe3O4 MNNA | Amine functionalized Fe3O4 superparamagnetic nanoassemblies | 2.2 | 314.6 | 143 |
| Resovist (SH U 555 A) | Carboxydextran-coated superparamagnetic iron oxide | 4.6 | 143 | 31.0 |
| Feridex (AMI-25) | Dextran-coated superparamagnetic iron oxide | 4.1 | 93 | 22.6 |
| Supravist (SH U 555 C) | Carboxydextran-coated superparamagnetic iron oxide | 7.3 | 57 | 7.8 |