Table 1.
Image acquisition protocol used in this volunteer study for both abdominal and control brain anatomies
| Abdomen and Control Brain | Control Brain only | |||
|---|---|---|---|---|
| Description | HT2W volume | SST2W stack | BFFE volume | HR T2W volume |
| Acquisition Type | 3D | 2D | 3D | 3D |
| Repetition Time [ms] | 1120 | 1161 | 2.46 | 2500 |
| Echo Time [ms] | 662.00 | 80.00 | 1.23 | 252.83 |
| Flip Angle [] | 90 | 90 | 15 | 90 |
| Pixel Spacing [mm] | 0.65 × 0.65 | 0.78 × 0.78 | 0.73 × 0.73 | 0.98 × 0.98 |
| Slice Thickness [mm] | 1.8 | 5 | 1.5 | 1 |
| Slice Spacing [mm] | 0.9 | 5 | 1.5 | 0.5 |
| Number of Slices | 90 | 20‐25 | 83 | 360 |
| Abdominal Imaging Trigger | Respiratory bellow | Expiratory BH | Expiratory BH | ‐ |
| Abdominal Scan Duration | 04:06.0 | 00:21.5‐00:33.3 | 00:23.0 | ‐ |
Notes: For the abdominal imaging, the heavily T2‐weighted (HT2W) volume is acquired as a gated acquisition triggered by a respiratory bellow. The single‐shot T2‐weighted (SST2W) stack and the balanced fast field echo (BFFE) acquisitions are acquired at separate expiratory breath‐holds (BH). For the quasi‐static control brain experiment, no imaging trigger is used and an additional HR T2W volume is acquired for ground‐truth comparisons. Example images associated with this protocol are shown in Figure 2.