Table 2.
mpMRI bladder imaging protocol for 1.5 and 3.0 Tesla (T).
| Parameter | T2w | DW | DCE |
|---|---|---|---|
| Field strength | 1.5 T/3 T | 1.5 T/3 T | 1.5 T/3 T |
| Sequence * | FSE | SS-EPI | FSPGR |
| Plane orientation | Multiplanar | Axial | Axial |
| FOV (mm) | 220–250 | 250–300 | 250–300 |
| TR (ms) | 4000–5000 | 4500–6000 | 3.5–4.5 |
| TE (ms) | 80–120 | 60–80 (minimum) | 1.2–2.2 |
| Acquisition matrix | 256 × 192–256 | 128 × 128 | 256 × 192–214 |
| Slice thickness/gap (mm) | 3–4/0 | 3–4/0 | 3–4/0 |
| Number of excitations | 1–2 | 4–12 + | 1 |
| Flip angles (FAs) (degree) | 90 | 90 | 15 |
| b-values (s/mm2) | NA | 0 and 800–1000, up to 2000 optional | NA |
Note: Precontrast T1 mapping with multiple flip angles (30°, 15°, and 5°) is preferred; * fast spin echo (FSE), single-shot echo-planar imaging (SS-EPI), and fast spoiled gradient echo (FSPGR). + To improve SNR, more excitations are required at higher b-values