Table 2. Concentrations of Gdn3+@CNTs-PEG, Gd-CNT, Gadovist®, and signal intensity.
| Sample | Vial number | Concentration, mg/mL | Concentration, % | Signal intensity |
|---|---|---|---|---|
| Gdn3+@CNTs-PEG | 1 | 0.11 | 6.3 | 274.74 |
| 2 | 0.05 | 12.5 | 345.59 | |
| 3 | 0.02 | 25.0 | 400.07 | |
| 4 | 0.01 | 50.0 | 367.20 | |
| 5 | 0.00 | 100 | 0 | |
| Gd-CNT | 1 | 0.05 | 6.3 | 320.49 |
| 2 | 0.11 | 12.5 | 308.92 | |
| 3 | 0.22 | 25.0 | 356.00 | |
| 4 | 0.44 | 50.0 | 365.64 | |
| 5 | 0.88 | 100 | 385.62 | |
| Gadovist® | 1 | 0.00 | 0.001 | 247.85 |
| 2 | 0.01 | 0.01 | 334.53 | |
| 3 | 0.15 | 0.1 | 443.49 | |
| 4 | 1.57 | 1.0 | 432.42 | |
| 5 | 9.81 | 6.3 | 150.52 | |
| 6 | 19.62 | 12.5 | 0* | |
| 7 | 21.16 | 25.0 | 0* | |
| 8 | 39.25 | 50.0 | 0* | |
| 9 | 78.50 | 100 | 0* |
*The value is due to high gadolinium (Gd) concentration in vials.