Table 1. Parameters of DWI and DKI.
| Parameters | DWI | DKI |
|---|---|---|
| Pulse sequence | Single-shot EPI | Single-shot EPI |
| TR (ms) | 4,000 | 3,100 |
| TE (ms) | 67.4 | 115.9 |
| FOV (mm2) | 22×22 | 22×13 |
| Acquisition matrix | 128×128 | 140×84 |
| Bandwidth (Hz/voxel) | 250 | 166.7 |
| Slice thickness (mm) | 4 | 5 |
| Gap (mm) | 1 | 0 |
| b values (s/mm2) | 0, 500 | 0, 1,000, 2,000 |
| Directions | 3 | 15 |
| NEX | 4 | 4 |
| Scanning time | 1 min 52 s | 6 min 52 s |
DWI, diffusion-weighted imaging; DKI, diffusion kurtosis imaging; EPI, echo planar imaging; TR, repetition time; TE, echo time; FOV, field of view; NEX, number of excitations.