Table 2.
Conventional MR brain tumor protocol used for 3 T.
| Examination Parameters |
2D ax T2 FLAIR | 2D T2 ax | DWI ax | 3D SWI ax | 3D T1 ax pre | 2D T2 cor | PWI ax | 3D T1 ax Post | 3D FLAIR |
|---|---|---|---|---|---|---|---|---|---|
| TSE + IR | TSE | EPI-SE | GRE | MPRAGE | TSE | SS-EPI | MPRAGE | TSE + IR | |
| Voxel dimensions | 0.9 × 0.9 | 0.8 × 0.6 | 1.8 × 1.8 | 0.9 × 0.9 | 1 × 1 | 0.4 × 0.4 | 1.8 × 1.8 | 1 × 1 | 1 × 1 |
| Matrix size | 256 × 256 | 250 × 384 | 128 × 128 | 256 × 192 | 256 × 256 | 531 × 640 | 128 × 128 | 256 × 256 | 256 × 256 |
| No. slices | 36 | 40 | 30 | 80 | 192 | 56 | 19 | 192 | 176 |
| Field of view [mm2] | 230 | 210 | 230 | 230 | 220 | 230 | 230 | 220 | 250 |
| Slice thickness, mm | 4 | 3 | 5 | 1.75 | 1 | 3 | 5 | 1 | 0.9 |
| TE [ms] | 100 | 88 | 78 | 20 | 3.79 | 115 | 32 | 3.79 | 393 |
| TI [ms] | 2500 | - | - | - | 1100 | - | - | - | 2050 |
| TR [ms] | 9220 | 3490 | 4000 | 28 | 1800 | 4290 | 1400 | 1800 | 7000 |
| TA, [min:s] | 4:38 | 1:25 | 1:38 | 3:52 | 5:44 | 3:40 | 1:17 | 5:44 | 3:39 |
| GRAPPA factor | - | - | 2 | 2 | - | 2 | 2 | - | - |
| BW/pixel, [Hz/pixel] | 170 | 199 | 1502 | 120 | 200 | 176 | 1346 | 200 | 651 |
| FA [°] | 150 | 120 | - | 15 | 12 | 120 | 90 | 12 | T2var |
| Fat saturation | yes | No | Yes | No | No | No | Yes | No | Yes |
2D T2 FLAIR TSE, 2D T2 weighted fluid-attenuated inversion recovery turbo spin echo; 2D T2 TSE, 2D T2 weighted turbo spin echo; DWI, diffusion weighted echo-planar spin echo imaging; 3D SWI, 3D susceptibility weighted gradient recalled echo imaging; 3D T1 MPRAGE (pre-/post), 3D magnetization prepared rapid acquisition gradient echo sequence pre- and post-contrast injection, post-contrast images are collected with equivalent parameters to pre-contrast images; PWI, perfusion weighted imaging with single-shot echo planar imaging.