Within 1 month after diagnosis and treatment initiation, 57 subjects were scanned on a Siemens Skyra 3 T and 12 subjects on a General Electric Signa 3 T. Parameters for the whole brain 3D sagittal T1 weighted and fat saturated sequence are provided in Table 1 . Images for this study were acquired 10 min after intravenous injection of 0.2 ml/kg of 0.5 mmol/ml gadoterate meglumine (Guerbet, France).
Magnetic resonance imaging parameters for whole brain 3D sagittal contrast enhanced T1 weighted and fat saturated sequence used to rate enhancement of cranial nerves III–XII
| Siemens Skyra 3 T (n = 57) | General Electric Signa 3 T (n = 12) | |
|---|---|---|
| Description | T1_sag_space_FS_CE | SagCUBET1FatsatK + |
| Coil configuration | 64 channel head | 32 channel head |
| Slice thickness (mm) | 0.93 | 1.0 |
| FOV read (mm) | 256 | 256 |
| FOV phase | 100% | 100% |
| TR (ms) | 500 | 650 |
| TE (ms) | 3.8 | Minimum |
| Fat suppression | Fat sat | Fat sat |
| Band width (Hz/Px) | 630 | 625 |
| Turbo factor | 40 | 30 |
| Averages/NEX | 1.0 | 1.0 |
| Shim | B0 standard/B1 Trueform | Auto |