Imaging parameters in CE MRV, TOF MRV, and MPRAGE sequences
| Parameter | CE | TOF | MPRAGE |
|---|---|---|---|
| Sequence | 3D FLASH | 2D TOF | 3D MPRAGE |
| Orientation | Sagittal | Coronal | Axial |
| TR (ms) | 3.78 | 28 | 2250 |
| TE (ms) | 1.5 | 6.93 | 3.04 |
| Inversion time (ms) | 900 | ||
| Flip angle (°) | 15 | 60 | 9 |
| Bandwith (Hz/pixel) | 430 | 65 | 200 |
| Section thickness (mm) | 0.4 | 2.5 | 1.2 |
| Sections/partitions | 416 | 128 | 144 |
| Distant factor (%) | −33 | ||
| FOV (mm) | (270–290)2 | 220 × 220 | 220 × 220 |
| Matrix | 384 × 384 | 256 × 256 | 384 × 384 |
| GRAPPA-factor | 2 | 2 | 2 |
| Acquisition time (min. sec) | 1.15 | 5.14 | 5.35 |
Note:—CE indicates contrast-enhanced MR venography; FLASH, fast low-angle shot; TOF, time-of-flight MR venography; MPRAGE, magnetization-prepared rapid acquisition of gradient echo; GRAPPA, generalized autocalibrating partially parallel acquisition.