Table I.
Pulse sequences in the present study.
| Parameter | T1-weighted image | T2-weighted image | DWI and DWIBS/T2 |
|---|---|---|---|
| Sequence | GRE | Single-shot SE | EPI SE |
| TR (msec) | 182 | 1,000 | 11,250 |
| TE (msec) | First: 2.3 (out phase) Second: 4.6 (in phase) | 90 | 83 |
| Flip angle (°) | 75 | 90 | 90 |
| NSA | 1 | 1 | 4 |
| Slice thickness (mm) | 8 | 8 | 5 |
| Slice gap | 1 | 1 | 0 |
| Fat saturation | No | No | SPAIR |
| Phase encoding direction | Posterior-anterior | Posterior-anterior | Posterior-anterior |
DWI, diffusion-weighted image; DWIBS, diffusion-weighted whole-body imaging with background body signal suppression/T2-weighted image fusion; GRE, gradient echo; SE, spin echo; EPI, echo planer imaging; TR, time to repetition; TE, time to echo; NSA, number of signal averages.