Table 1 In vivo phase contrast sequence parameters
From: Method for calculating confidence intervals for phase contrast flow measurements
Free breathing, R = 2 | Breath hold, R = 3 | Breath hold, R = 4 | |
|---|---|---|---|
(FB) | (BH3) | (BH4) | |
Matrix | 240x180-240 | 192x144-192 | 192x144-192 |
Field of view | 360x240-360 | 360x240-360 | 360x240-360 |
Parallel imaging | 2 | 3 | 4 |
Flip angle | 20 | 20 | 20 |
TE | 2.6-2.8 ms | 2.5-2.7 ms | 2.5-2.7 |
TR | 5.0-5.2 ms | 4.5-4.7 ms | 4.5-4.7 ms |
VENC | 200 | 200 | 200 |
Averages | 3 | 1 | 1 |
Acquired phases | 30-40 | 23-26 | 20-25 |
Reconstructed phases | 30 | 30 | 30 |