Table 2.
Magnetic resonance imaging protocol parameters.
| Sequence | |||||
|---|---|---|---|---|---|
|
|
|||||
| Characteristic | Sagittal proton density fat-saturated TSE | Coronal proton density fat-saturated TSE | Axial proton density fat-saturated TSE | Sagittal 3D TSE (SPACE/VISTA) | Sagittal DESS |
|
| |||||
| Acquisition time, min:s | 2:18 | 1:22 | 1:31 | 4:28 | 5:56 |
| Repetition time, ms | 2490 | 2430 | 6910 | 1000 | 17.55 |
| Echo time, ms | 18 | 18 | 20 | 28 | 6.02 |
| Matrix, frequency × phase | 320 × 256 | 320 × 256 | 256 × 256 | 320 × 304 | 384 × 307 |
| Number of slices | 33 | 37 | 41 | 160 | 160 |
| Field of view, mm | 140 | 140 | 140 | 140 | 140 |
| Slice thickness, mm | 3 | 3 | 3 | 0.7 | 0.7 |
| Skip, mm | 0.3 | 0.3 | 0.3 | 0 | 0 |
| Flip angle | 150° | 150° | 150° | Variable | 25° |
| Bandwidth, Hz/pixel | 300 | 300 | 300 | 422 | 186 |
| Fat suppression | Fat saturated | Fat saturated | Fat saturated | No | Fat saturated |
TSE, turbo spin-echo; SPACE, sampling perfection with application-optimized contrasts; VISTA, volume isotropic turbo spin-echo acquisition; DESS, dual-echo steady-state.