Table 2.
4D measures of the great vessels of healthy controls.
| 4Dprosp | 4Dretro | Bias (%) | p | ICC | p | |
|---|---|---|---|---|---|---|
| %-Cardiac cycle acquired (range) | 85 ± 6 [69–95] |
96 ± 1 [93–99] |
−11 ± 6 | <0.01 | – | – |
| Aorta | ||||||
| Thoracic aorta | ||||||
| Pulse wave velocity (m/s) | 5.0 ± 0.8 | 5.0 ± 0.8 | 1 ± 11 | 0.72 | 0.86 | <0.01 |
| Ascending aortic plane | ||||||
| Total volume (ml) | 73 ± 13 | 73 ± 11 | 0 ± 9 | 0.13 | 0.91 | <0.01 |
| Cardiac output (L/min) | 4.5 ± 1.2 | 4.6 ± 1.1 | −2 ± 12 | 0.10 | 0.93 | <0.01 |
| Max flow rate (ml/s) | 333 ± 86 | 328 ± 64 | 1 ± 10 | 0.72 | 0.94 | <0.01 |
| Max velocity (cm/s) | 98 ± 21 | 95 ± 16 | 4 ± 13 | 0.89 | 0.88 | <0.01 |
| Max pressure gradient (mmHg) | 4.1 ± 1.8 | 3.7 ± 1.2 | 10 ± 27 | 0.69 | 0.87 | <0.01 |
| Main pulmonary artery | ||||||
| Total volume (ml) | 75 ± 15 | 78 ± 14 | −4 ± 10 | 0.02 | 0.92 | <0.01 |
| Cardiac output (L/min) | 4.7 ± 1.4 | 4.9 ± 1.3 | −5 ± 12 | 0.04 | 0.92 | <0.01 |
| Max flow rate (ml/s) | 314 ± 86 | 329 ± 78 | −5 ± 11 | 0.02 | 0.93 | <0.01 |
| Max velocity (cm/s) | 80 ± 14 | 80 ± 12 | 1 ± 12 | 0.701 | 0.81 | <0.01 |
| Max pressure gradient (mmHg) | 2.6 ± 1.0 | 2.6 ± 0.7 | 4 ± 26 | 0.60 | 0.78 | <0.01 |
Mean ± SD are shown for vascular measurements of healthy controls (n = 32) from both 4D sequences which were prospectively (4Dprosp) and retrospectively gated (4Dretro). A percent-bias is reported using the 4Dretro sequence as reference. ICC, intraclass correlation.