Table 3.
Contrast agent relevant properties obtained for the Gd-DOTA− System.
| Gd-DOTA− | Gd-DOTA− + 1 |
Gd-DOTA− + 1 + urea |
Gd-DOTA− + 1 + urea, after sonication |
|
|---|---|---|---|---|
| r1 (mM−1 s−1)a | 2.97(6) | 2.69(21) | 2.67(18) | 2.95(7) |
| r1 (mM−1 s−1)b | 3.11 | 3.05 | 3.05 | 3.05 |
| Q | 0.9 | 0.9 | 0.9 | 0.9 |
| τm × 10−7 (s) | 2.4 | 2.7 | 1.7 | 1.3 |
| kex × 106 (s−1) | 4.2 | 3.7 | 5.9 | 7.7 |
| T1e × 10−7 (s) | 1.8 | 7.4 | 9.1 | 3.9 |
| T2e × 10−10 (s) | 1.44 | 1.49 | 2.68 | 1.09 |
| G | 1.98 | 1.99 | 1.98 | 1.98 |
| ΔHpp (G) | 460 | 444 | 247 | 60.6 |
| τR × 10−12 (s) | 58.7 | 57.7 | 58.5 | 58.6 |
a
Acquired at 9.4 T, 25 °C.
b
Acquired at 1.4 T, 37 °C.