Table 1.
Imaging parameters for T1-,T2- and contrast-enhanced T1-weighted MRI and SS-EPI, and RESOLVE DWI sequences
| Parameters | T1WI | Fat-suppressed T2WI | Contrast-enhanced T1WI | SS-EPI DWI | Resolve DWI (RS-EPI) DWI |
||||
|---|---|---|---|---|---|---|---|---|---|
| Scan plane | axial | axial | sagittal | coronal | axial | sagittal | coronal | axial | axial |
| Slice thickness, mm | 4 | 4 | 4 | 4 | 4.5 | 4 | 4.5 | 4 | 4 |
| Slice gap, mm | 0.4 | 0.4 | 0.4 | 0.4 | 0.45 | 0.4 | 0.45 | 0.4 | 0.4 |
| TR, ms | 500 | 5460 | 4450 | 5460 | 507 | 582 | 500 | 6800 | 5700 |
| TE, ms | 12 | 87 | 87 | 87 | 12 | 9 | 9 | 113 | 78 |
| Matrix | 320 × 320 | 320 × 320 | 320 × 320 | 320 × 320 | 320 × 320 | 320 × 320 | 320 × 320 | 192 × 192 | 200 × 200 |
| FOV, mm | 300 × 300 | 300 × 300 | 280 × 280 | 280 × 280 | 240 × 240 | 240 × 240 | 260 × 260 | 300 × 300 | 300 × 300 |
| Flip angle | 160° | 148° | 156° | 148° | 160° | 180° | 180° | – | – |
| b value, s/mm2 | – | – | – | – | – | – | – | 0; 1000 | 0; 1000 |
| Average | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Scan times | 2min14s | 2min37s | 2min44s | 2min14s | 2min52s | 3min32s | 3min14s | 2min9s | 4min59s |
MRI magnetic resonance imaging, SS-EPI single-shot echo-planar imaging, RESOLVE readout segmentation of long variable echo-trains, DWI diffusion-weighted imaging, T1WI T1-weighted imaging, T2WI T2-weighted imaging, RS-EPI readout-segmented echo-planar imaging, TR time of repeat, TE time of echo, FOV field of vision, min minutes, s second