Table 1 Imaging protocol parameters
Parameters | T1WI | T2WI | DWI | DKI | APTWI |
|---|---|---|---|---|---|
Sequence | FSE | FSE | SS-EPI | SS-EPI | EPI |
Orientation | Axial | Axial | Axial | Axial | Axial |
FOV (cm2) | 36 × 36 | 36 × 36 | 36 × 36 | 36 × 36 | 36 × 36 |
Matrix | 320 × 224 | 320 × 224 | 128 × 128 | 128 × 128 | 128 × 128 |
TR/TE (ms) | 605/8 | 5455/109 | 6000/60.5 | 2500/58.9 | 3000/12 |
Slice thickness | 5 | 5 | 5 | 5 | 5 |
Slice gap (mm) (mm) | 1 | 1 | 1 | 1 | 1 |
NEX | 1 | 1 | 1, 4 | 2 | 1 |
b-values (s/mm2) | / | / | 0, 800 | 0, 500,1000,1500,2000 | / |
saturation pulse/time | / | / | / | / | 2.0 μT, 500 ms |
Frequency list (only APTWI) | 52 frequencies in total: 5000, 5000, 5000, ±600, ±575, ±550, ±525, ±500, ±475, ±450, ±425, ±400, ±375, ±350, ±325, ±300, ±275, ±250, ±225, ±200, ±175, ±150, ±125, ±100, ±75, ±50, ±25 Hz | ||||
Scan time | 1 min 57 s | 1 min 33 s | 1 min 24 s | 5 min 28 s | 2 min 36 s (Single layer) |