Table 4.
Voxel-based MET2 results acquired in vivo (Rats #1–11) and ex vivo (Rats #9–11). For each rat, mean (± SD) ROI component relaxation times (T̄2n) and signal fractions (pn) were tabulated using voxel-based MET2 analysis. Only voxels deemed admissible were used in these calculations. The total percentage of admissible voxels within tumor ROIs, or admissibility (admiss), was also tabulated.
| Rat |
In Vivo
|
Ex Vivo
|
|||||
|---|---|---|---|---|---|---|---|
| # | pI (%) | T̄2,I (ms) | admiss (%) | pI (%) | T̄2,I (ms) | admiss (%) | |
| 1 | 7.1 ± 2.8 | 28.7 ± 2.3 | 100 | ||||
| 2 | 10.8 ± 10.8 | 28.7 ± 10.6 | 88.9 | ||||
| 3 | 21.3 ± 3.3 | 29.4 ± 3.4 | 97.0 | ||||
| 4 | 4.6 ± 1.1 | 20.4 ± 3.2 | 100 | ||||
| 5 | 12.1 ± 1.6 | 28.4 ± 1.5 | 100 | ||||
| 6 | 6.9 ± 3.2 | 33.0 ± 5.6 | 30.0 | ||||
| 7 | 11.1 ± 9.6 | 29.9 ± 17.9 | 69.2 | ||||
| 8 | 2.7 ± 0.4 | 22.3 ± 4.3 | 90.0 | ||||
| 9 | 8.1 ± 10.2 | 26.6 ± 12.6 | 85.7 | 9.0 ± 10.1 | 48.9 ± 25.7 | 92.9 | |
| 10 | 11.0 ± 1.5 | 22.5 ± 1.3 | 100 | 11.3 ± 3.0 | 34.9 ± 4.3 | 100 | |
| 11* | 0 | - | 0 | 5.3 ± 1.3 | 30.3 ± 4.3 | 100 | |
|
| |||||||
| Mean | 9.6 ± 4.5 | 22.1 ± 5.5 | 86.1 ± 22.0 | 8.5 ± 4.8 | 38.1 ± 11.4 | 97.6 ± 4.1 | |
*
Indicates animal was ignored in calculating the mean values across animals for in vivo measurements.