Table 2.
MRI main sequence parameters.
| Parameters | T2WI | T2WI | T2WI | T1WI | DWI | CE-T1WI | CE-T1WI | CE-T1WI |
|---|---|---|---|---|---|---|---|---|
| Skyra | ||||||||
| Imaging technique | TSE | TSE | TSE | TSE | Readout- segmented EPI |
TSE | TSE | TSE |
| Orientation | Coronal | Sagittal | Axial | Axial | Axial | Axial | Sagittal | Coronal |
| TR(ms) | 4,500 | 4,000 | 4,300 | 250 | 3,900 | 884 | 884 | 565 |
| TE(ms) | 82 | 82 | 82 | 2.5 | 55 | 6.9 | 6.9 | 6.9 |
| Field of view (mm2) | 230 × 230 | 230 × 230 | 230 × 230 | 230 × 230 | 220 × 220 | 240 × 240 | 240 × 240 | 240 × 240 |
| Slice thickness (mm) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| No. of slices | 27 | 25 | 27 | 27 | 24 | 20 | 20 | 20 |
| b-values (s/mm2) | NA | NA | NA | NA | 0/1,000 | NA | NA | NA |
| Acquisition time | 1 min 13 s | 1 min 13 s | 1 min 13 s | 1 min | 1 min 47 s | 1 min 37 s | 1 min 58 s | 59 s |
| Discovery 750 | ||||||||
| Imaging technique | FSE | FSE | FSE | FSE | EPI | FSE | FSE | FSE |
| Orientation | Coronal Ideal | Sagittal | Axial Ideal |
Axial | Axial | Axial | Sagittal Ideal | Coronal |
| TR (ms) | 3,410 | 3,000 | 2,824 | 478 | 3,044.5 | 550 | 604 | 567 |
| TE (ms) | 68 | 85 | 68 | Min Full | 60.5 | Min Full | Min Full | Min Full |
| Field of view (mm2) | 240 × 240 | 240 × 240 | 240 × 240 | 240 × 240 | 240 × 240 | 240 × 240 | 240 × 240 | 240 × 240 |
| Slice thickness (mm) | 4.5 | 4 | 4 | 4 | 4 | 4 | 4 | 4.5 |
| No. of slices | 18 | 22 | 20 | 20 | 20 | 20 | 20 | 20 |
| b-values (s/mm2) | NA | NA | NA | NA | 0/800 | NA | NA | NA |
| Acquisition time | 1 min 56 s | 2 min 2 s | 1 min 42 s | 38 s | 1 min 42 s | 1 min 53 s | 1 min 56 s | 1 min 36 s |
| Ingenia CX | ||||||||
| Imaging technique | TSE | TSE | TSE | TSE | EPI | TSE | TSE | TSE |
| Orientation | Coronal | Sagittal | Axial | Axial | Axial | Axial | Sagittal | Coronal |
| TR (ms) | 3,400 | 2,388 | 3,500 | 574 | 3,914 | 548 | 486 | 611 |
| TE (ms) | 100 | 66 | 85 | 6.5 | 60 | 7.1 | 7.5 | 7.5 |
| Field of view (mm2) | 180 × 180 | 220 × 220 | 180 × 180 | 180 × 180 | 200 × 224 | 200 × 200 | 180 × 180 | 200 × 200 |
| Slice thickness (mm) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| No. of slices | 24 | 24 | 24 | 24 | 24 | 20 | 19 | 24 |
| b-values (s/mm2) | NA | NA | NA | NA | 0/800 | NA | NA | NA |
| Acquisition time | 1 min 32 s | 1 min 33 s | 1 min 56 s | 1 min 30 s | 1 min 38 s | 1 min 55 s | 2 min 12 s | 1 min 43 s |
T2WI, T2-weighted imaging; T1WI, T1-weighted imaging; DWI, diffusion-weighted imaging; TSE, turbo spin-echo; EPI, echo-planar imaging; TR, repetition time; TE, echo time; NA, not applicable; FSE, fast spin-echo; CE, contrast enhance.