Table 1 Acquisition parameters of the 2D and 4D flow scans
From: Doppler ultrasound cardiac gating of intracranial flow at 7T
2D Flow M1Ra | 2D Flow CAb | 4D Flow CoWc | |
|---|---|---|---|
Scan duration (min:s) | 1:08–1:51 | 1:40–3:04 | 4:34–7:27 |
Heart rate (median) | 50–72 (66) | 50–79 (66) | 51–84 (65) |
Resolution (mm × mm) | 0.5 × 0.5 | 0.3 × 0.3 | 0.7 × 0.7 |
Slice thickness (mm) | 5.0 | 5.0 | 0.7 |
Time frames (median) | 14–20 (17) | 13–20 (20) | 6–10 (7) |
FOV (mm × mm) | 200 × 220 | 200 × 220 | 180 × 180 × 21 |
TR (ms) | 10 | 10 | 5.6 |
TE (ms) | 2.8 | 4.3 | 2.8 |
α (°) | 5 | 5 | 8 |
BW (Hz/pixel) | 405 | 403 | 404 |
Turbofactor | 2–3 | 2–3 | 6 |
SENSE | 2.0 | 2.0 | 3.5 |
Temporal resolution (ms) | 40–60 | 40–80 | 130–140 |
venc (cm/s) | 150 | 15 | 150 |