Table 1 Protocol and applied sequence parameter in 1st institution with 1.5 Tesla system (Toshiba Vantage Titan, agent Japan)
From: Magnetic resonance imaging in the workup of patients with perianal fistulas
Scan parameters | T2_TSE_sagittal- FS | T2_TSE_axial- FS | T2_TSE_axial oblique | T2_TSE_coronal oblique | T1_TSE_axial oblique_FS | T1_TSE_coronal oblique_FS | DWI |
|---|---|---|---|---|---|---|---|
Sequence type | Turbo spin echo (TSE) | Turbo spin echo (TSE) | Turbo spin echo (TSE) | Turbo spin echo (TSE) | Turbo spin echo (TSE) | Turbo spin echo (TSE) | Turbo spin echo (TSE) |
Orientation | Sagittal | Axial | Axial oblique | Coronal oblique | Axial oblique | Coronal oblique | Axial oblique |
Number of slices | 20 | 30 | 20 | 20 | 26 | 20 | 24 |
Slice thickness (mm) | 3.5 | 3.5 | 3.6 | 3 | 3 | 3 | 3 |
Slice gap (mm) | 0.4 | 0.6 | 0.6 | 0.4 | 0.6 | 0.6 | 0.5 |
FOV (mm) | 259 × 360 | 230 × 320 | 230 × 320 | 270 × 320 | 309 × 380 | 380 × 380 | 385 × 385 |
TR (ms) | 4280 | 6000 | 6600 | 6080 | 730 | 851 | 6400 |
TE (ms) | 105 | 100 | 134 | 100 | 11 | 15 | 101 |
NEX | 3 | 2 | 2 | 2 | 3 | 3 | 2 |
Fat sup | Yes | Yes | No | No | Yes | Yes | - |
Matrix | 368 × 512 | 265 × 512 | 265 × 512 | 360 × 512 | 256 × 512 | 256 × 512 | 256 × 256 |
Bandwidth (Hz/Px) | 250 | 250 | 250 | 250 | 195 | 195 | 173 |
B value s/mm2 | – | – | – | – | – | – | 0–50–800 |