Table 1 Scan parameters for the three flow-encoding sequences
Parameters | Cartesian | Radial triggered | Retrospective |
|---|---|---|---|
TR [ms] | 5 | 3 | 3 |
TE [ms] | 1.7 | 1.2 | 1.2 |
Sampling bandwidth [kHz] | 75.8 | 75.8 | 75.8 |
Flip angle [°] | 30-40 | 30-40 | 30-40 |
Echo position | 25 | 10 | 10 |
[% of the read-out] | |||
Number of read-out points | 160 | 90 | 90 |
Number of projections | 160 | 160 | 16000* |
Number of Cine segments | 5 | 3 | - |
Frames per Cine Segment | 8 | 14 | - |
Number of velocity-encoding steps | 3 | 3 | 3 |
VENC [m/s] | 1.7 | 1.7 | 1.7 |
Spatial resolution [ μ m 2 ] | 150×150** | 150×150‡ | 150×150‡ |
Field of view [mm 2 ] | 24×24 | 24×24 | 24×24 |
Slice thickness [mm] | 1 | 1 | 1 |
Measurement time [minutes] | 6.7±1.1 | 4.3±0.6 | 2.9 |