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19F relaxivity measurements in D2O at 9.4 T. PFtBTRI polymers exhibit 19F-NMR characteristics amenable to 19F-MR imaging: a single 19F resonance, short T1 values and relatively long T2 values.
| Polymer | T1 (s) | T2 (s) |
|---|---|---|
| mPEG1k-OPFtBTRI | 0.53 ± 0.01 | 0.11 ± 0.01 |
| mPEG2k-OPFtBTRI | 0.49 ± 0.01 | 0.11 ± 0.01 |
