Table 3:
Imaging protocol. The pulse sequence order was randomized.
| Sequence | Purpose | Sequence Duration (s) | Repetitions | Measurement Locations | |
|---|---|---|---|---|---|
| SvO2 | Velocity | ||||
| K-MOTIVE-left * | Interleaved sequence to simultaneously measure flow velocity (optimized for venous flow) with radial phase-contrast and T2 with bSSFP readout. | 21 | 3 | Left renal vein | |
| K-MOTIVE-right * | Right renal vein | ||||
| K-MOTIVE-supra * | Suprarenal inferior vena cava | ||||
| K-MOTIVE-infra * | Infrarenal inferior vena cava | ||||
| db-K-MOTIVE * | Dual-band implementation of Interleaved sequence to simultaneously measure flow velocity (optimized for venous flow) with radial phase-contrast and T2 with bSSFP readout. | 21 | 3 | Suprarenal & infrarenal inferior vena cava | |
| db-calibration * | Cartesian gradient-recalled-echo sequence to determine coil sensitivity maps for slice separation in db-K-MOTIVE | 12 | 1 | Suprarenal & infrarenal inferior vena cava | |
| Cartesian phase-contrast | Reference sequence to separately measure flow velocities in renal artery and vein (via Cartesian readout) | 10 | 3 | n.a. | Renal artery & vein |
Pulse sequences marked by asterisks were repeated at each location in a second scan session on the same day (after repositioning) to evaluate short-term intersession reproducibility. Subjects were requested to perform a post-exhalation breath hold. Abbreviations: supra = suprarenal; infra = infrarenal; db = dual-band; bSSFP = balanced steady-state free precession; and T2prep = T2-preparation.