Table 1 –
Pulse sequence parameters
| QISS MRA | PDIP-SOS | |||
|---|---|---|---|---|
| 1.5T | 3T | 1.5T | 3T | |
| Imaging type | 2D | 2D | 3D | 3D |
| Field of view (mm) | 400 × 400 | 400 × 400 | 410 × 410 | 416 × 416 |
| Slice thickness (mm) | 3 | 3 | 0.5 | 0.5 |
| In-plane resolution (mm) | 1.0 × 1.0 | 1.0 × 1.0 | 1.0 × 1.0 | 1.1 × 1.1 |
| Echo time (ms) | 1.4 | 1.7 | 4.7 | 2.5 |
| Repetition time (ms) | 3.5 | 3.8 | 9.6 | 5.0 |
| Flip angle | 90° | 90° | 4.5° | 2.5° |
| Bandwidth (Hz/pixel) | 658 | 960 | 300 | 750 |
| Inversion time (ms) | 350 | 350 | ||
| GRAPPA | 2 | 2 | ||
| Readout | Cartesian | Cartesian | Stack-of-Stars | Stack-of-Stars |
| Acquisition time (min) | 12* | 12* | 6.2 | 5.9 |
GRAPPA, generalized autocalibrating partially parallel acquisition acceleration factor
Stack-of-stars denotes radial acquisition within each slice-encoding step, and Cartesian sampling in the slice-encoding direction
*
Considering 10 stations, a heart rate of 70 beats per minute, and 15 seconds breath-holds in the 3 abdominal stations