Table 1.
Parameters for MRI of rhesus monkeys and humans.
| Parameter | T1-weighted | T2-weighted | T1 ρ∗ | T2 map |
|---|---|---|---|---|
| Pulse sequence | TSE | TSE | TSE | TSE |
| Monkey | ||||
| Repetition time (ms) | 400 | 2500 | 800 | 2000 |
| Echo time (ms) | 7.8 | 100 | 8 | TE∗∗ |
| Field of view (mm) | 210 × 210 | 210 × 210 | 210 × 210 | 210 × 210 |
| Pixel bandwidth (Hz) | 242 | 475 | 332 | 234 |
| Voxel size (mm) | 0.9 × 1.25 | 0.9 × 1.25 | 0.59 × 1.17 | 0.7 × 0.8 |
| Section thickness (mm) | 3 | 3 | 3 | 3 |
| Section gap (mm) | 0 | 0 | 0 | 0 |
| Number of sections | 7 | 7 | 4 × 7 | 8 × 7 |
| Turbo factor | 4 | 45 | 12 | 8 |
| Acquisition time (ms) | 140 | 80 | 451 | 526 |
| Human | ||||
| Repetition time (ms) | 448 | 3228 | 800 | 2000 |
| Echo time (ms) | 8 | 100 | 8 | TE∗∗ |
| Field of view (mm) | 250 × 250 | 250 × 250 | 240 × 240 | 240 × 240 |
| Pixel bandwidth (Hz) | 320 | 348 | 348 | 234 |
| Voxel size (mm) | 0.9 × 1.25 | 0.9 × 1.25 | 0.59 × 1.17 | 0.7 × 0.8 |
| Section thickness (mm) | 3 | 3 | 3 | 3 |
| Section gap (mm) | 0 | 0 | 0 | 0 |
| Number of sections | 15 | 15 | 4 × 16 | 8 × 16 |
| Turbo factor | 4 | 45 | 12 | 8 |
| Acquisition time | 208 | 160 | 260 | 526 |
∗Time of spin locking at 2, 15, 30, and 45 ms.
∗∗Time of spin locking at 11, 22, 32, 43, 54, 65, 76, and 85 ms.
MRI = magnetic resonance imaging; TSE = turbo spin echo; TE = the echo time.