Table 2:
Sequence parameters for the 3D-TOF MRA at 1.5T and 3T
| Parameters | 1.5T | 3T |
|---|---|---|
| Acquisition time (min:sec) | 15:07 | 15:51 |
| Voxel size (mm3) | 0.4 | 0.4 |
| No. of slabs | 1 | 1 |
| Sections per slab | 144 | 144 |
| Distance factor (%) | 50 | 50 |
| FOV read (mm) | 230 | 200 |
| FOV phase (%) | 62.5 | 100 |
| Section thickness (mm) | 0.4 | 0.4 |
| Base resolution | 512 | 512 |
| Phase resolution (%) | 100 | 100 |
| Section resolution (%) | 67 | 50 |
| TR (ms) | 40 | 21 |
| TE (ms) | 7.15 | 3.77 |
| Flip angle (°) | 25 | 18 |
| Bandwidth (Hz/px) | 65 | 212 |
| MTC | Yes | No |
| No. of averages | 1 | 1 |
| No. of concatenations | 1 | 1 |
| No. of measurements | 1 | 1 |
| SNR | 1 | 1 |
| Phase oversampling (mm3) | 0 | 0 |
| Section oversampling (%) | 0 | 22.2 |
| Phase partial Fourier | 7/8 | Off |
| Section partial Fourier | 7/8 | Off |
Note:—MTC indicates magnetization transfer contrast.