Table 1.
MRI sequences used for testing reproducibility between scanners and pulse sequences.
| Name | Pulse sequence |
Field strength (T) |
Orientation | TE (ms) |
TR (ms) |
TI (ms) |
Flip angle (°) |
Slice thickness (mm) |
In plane resolution (mm) |
|---|---|---|---|---|---|---|---|---|---|
| A1 | MP-RAGE* | 1.5 | Sagittal | 3.8 | 8.6 | 1000 | 8 | 1.20 | 0.938 |
| A2 | MP-RAGEx | 1.5 | Axial | 3.8 | 8.6 | 1000 | 8 | 1.20 | 0.938 |
| A3 | SPGR | 1.5 | Axial | 4.9 | 11.1 | 300 | 18 | 1.10 | 1.094 |
| A4 | SPGR | 1.5 | Coronal | 5.2 | 11.8 | 450 | 20 | 1.50 | 0.859 |
| B1 | MP-RAGE* | 3.0 | Sagittal | 2.8 | 6.6 | 900 | 8 | 1.20 | 1.016 |
| B2 | SPGR* | 3.0 | Sagittal | 2.8 | 7.0 | 650 | 8 | 1.20 | 1.016 |
| B3 | SPGR | 3.0 | Coronal | 2.8 | 7.1 | 450 | 20 | 1.10 | 1.094 |
| B4 | SPGR | 3.0 | Coronal | 3.1 | 8.1 | 500 | 20 | 1.50 | 0.781 |
*
ADNI compatible sequence (Jack et al., 2008a)
x
ADNI compatible sequence acquired in axial rather than sagittal orientation