A 3.0 T MR scanner was used for every examination (MAGNETOM Verio, Siemens Healthineers). The standard dedicated pelvic MRI protocol consisted of the following sequences, transverse volumetric interpolated breath-hold examination with fat-suppression (VIBE)-T1WI, transverse and sagittal turbo spin echo with fat-suppression (TSE)-T2WI, and DWI (b value=50 and 800s/mm2). For the arterial and venous phases, CE-T1WI was performed in the transverse and sagittal planes at 40-60 seconds and 90-110 seconds, after intravenous injections of gadobenate dimeglumine (MultiHance, Bracco, 0.2mmol/kg body weight, rate of 3.0mL/s). The MRI protocol is shown in Table 1 .
MRI protocol
| Sequences | TR (ms) | TE (ms) | Slice Thickness (mm) | Intersection Gap (mm) | FOV (mm) | Matrix |
|---|---|---|---|---|---|---|
| TSE-T2WI-SAG | 4000 | 96 | 5 | 1.0 | 360 x 360 | 384 x 384 x 70% |
| TSE-T2WI-TRA | 3400 | 91 | 5 | 1.0 | 240 x240 | 320 x320 x70% |
| DWI | 6000 | 58 | 5 | 1.0 | 400 x 300 | 180 x 180 x 85% |
| VIBE-T1WI-TRA | 3.2 | 1.2 | 3 | 0 | 360 x 300 | 384 x 384 x 70% |
| VIBE-T1WI-SAG | 3.8 | 1.41 | 3 | 0 | 280 x280 | 320 x320 x70% |
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