Table 2.
Protocols for 0.55T and 1.5T for the three most imaged body regions (head, lumbar spine, hip).
| Repitition Time (TR) (ms) | Echo time (TE) (ms) | Slice thickness (ST) (mm) | Resolution (mm2) | Field-of-view (FOV) (mm2) | Time of acquisition (TA) (min) | |||
|---|---|---|---|---|---|---|---|---|
| Lumbar spine | T1 Turbo spin echo (TSE) sagittal | 1.5T | 625 | 11 | 4 | 0.7 × 0.7 | 300 × 300 | 02:29 |
| 0.55T | 454 | 13 | 4 | 0.8 × 0.8 | 320 × 320 | 05:26 | ||
| T2 TSE sagittal | 1.5T | 3600 | 102 | 4 | 0.7 × 07 | 300 × 300 | 01:44 | |
| 0.55T | 3500 | 99 | 4 | 0.8 × 0.8 | 320 × 320 | 03:34 | ||
| T2 TSE axial | 1.5T | 4210 | 107 | 4 | 0.5 × 0.5 | 200 × 200 | 04:40 | |
| 0.55T | 5910 | 84 | 4 | 0.5 × 0.5 | 200 × 200 | 04:51 | ||
| T2 DIXON cor | 1.5T | 6630 | 90 | 5 | 0.8 × 0.8 | 300 × 300 | 05:00 | |
| Hip | TIRM cor | 1.5T | 4000 | 34 | 3.5 | 1.1 × 0.9 | 220 × 220 | 01:48 |
| 0.55T | 4440 | 35 | 3.5 | 1.6 × 1.1 | 220 × 220 | 02:48 | ||
| T2 TSE cor | 1.5T | 3400 | 73 | 3.5 | 0.6 × 0.5 | 220 × 220 | 01:25 | |
| 0.55T | 3220 | 77 | 3.5 | 1.0 × 0.7 | 220 × 220 | 02:21 | ||
| TIRM axial | 1.5T | 5210 | 54 | 5 | 0.8 × 0.6 | 180 × 180 | 03:33 | |
| 0.55T | 4260 | 25 | 5 | 1.1 × 0.9 | 220 × 220 | 04:58 | ||
| T1 TSE axial | 1.5T | 661 | 9.5 | 5 | 0.9 × 0.8 | 200 × 200 | 05:44 | |
| 0.55T | 517 | 9.4 | 5 | 1 × 0.7 | 220 × 220 | 03:40 | ||
| T1 TSE sagittal | 1.5T | 596 | 8.5 | 5 | 0.9 × 0.7 | 220 × 220 | 02:32 | |
| 0.55T | 517 | 9.4 | 5 | 1 × 0.7 | 220 × 220 | 03:40 | ||
| Head | Fluid attenuated inversion recovery (FLAIR) axial | 1.5T | 8510 | 112 | 3 | 0.9 x 0.9 | 187 × 230 | 03:26 |
| 0.55T | 7780 | 96 | 3 | 1.3 × 1 | 209 × 230 | 05:28 | ||
| Susceptibility weighted imaging (SWI) axial | 1.5T | 48 | 40 | 3 | 1.1 × 0.96 | 194 × 230 | 02:17 | |
| 0.55T | 172 | 100 | 3 | 0.9 x 0.8 | 201 × 230 | 02:23 | ||
| Diffusion weighted imaging (DWI) (echo-planar imaging(EPI)) axial | 1.5T | 6200 | 103 | 3 | 1.4 × 1.4 | 220 × 220 | 02:04 | |
| 0.55T | 7400 | 102 | 3 | 1.7 × 1.7 | 230 × 230 | 04:35 |