Table 2.
Semi-quantitate analysis of 4D flow magnitude data image quality for 1.5T (5 subjects) and 3T (5 subjects) and all subjects combined (Total).
| Conventional navigator | Seff=60% | Seff=80% | Seff=100% | P-value | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.5T | 3T | Total | 1.5T | 3T | Total | 1.5T | 3T | Total | 1.5T | 3T | Total | Total* | ||
| Edge sharpness | AAo | 2.4±0.2 | 2.2±0.3 | 2.3±0.3 | 2.4±0.2 | 2.2±0.3 | 2.3±0.3 | 2.4±0.2 | 2.2±0.3 | 2.3±0.3 | 2.4±0.2 | 2.1±0.2 | 2.3±0.3 | 0.96 |
| arch | 2.6±0.2 | 2.2±0.3 | 2.4±0.3 | 2.6±0.2 | 2.2±0.3 | 2.4±0.3 | 2.6±0.2 | 2.2±0.3 | 2.4±0.3 | 2.6±0.2 | 2.1±0.2 | 2.3±0.3 | 0.97 | |
| SAA | 2.2±0.7 | 1.9±0.6 | 2.1±0.6 | 2.3±0.6 | 1.9±0.6 | 2.1±0.6 | 2.3±0.6 | 1.9±0.6 | 2.1±0.6 | 2.2±0.7 | 1.6±0.4 | 1.9±0.6 | 0.80 | |
| DAo | 2.6±0.2 | 2.2±0.3 | 2.4±0.3 | 2.6±0.2 | 2.2±0.3 | 2.4±0.3 | 2.6±0.2 | 2.3±0.3 | 2.5±0.3 | 2.6±0.2 | 2.1±0.2 | 2.4±0.3 | 0.89 | |
|
| ||||||||||||||
| Visibility | AAo | 3.0±0.0 | 2.7±0.3 | 2.9±0.2 | 3.0±0.0 | 2.7±0.3 | 2.9±0.2 | 3.0±0.0 | 2.7±0.3 | 2.9±0.2 | 3.0±0.0 | 2.7±0.3 | 2.9±0.2 | 1.00 |
| arch | 3.0±0.0 | 2.7±0.3 | 2.9±0.2 | 3.0±0.0 | 2.7±0.3 | 2.9±0.2 | 3.0±0.0 | 2.7±0.3 | 2.9±0.2 | 3.0±0.0 | 2.7±0.3 | 2.9±0.2 | 1.00 | |
| SAA | 2.3±0.3 | 1.8±0.3 | 2.1±0.4 | 2.4±0.2 | 1.8±0.3 | 2.1±0.4 | 2.4±0.2 | 1.7±0.3 | 2.1±0.4 | 2.3±0.3 | 1.7±0.3 | 2.0±0.4 | 0.95 | |
| DAo | 3.0±0.0 | 2.7±0.3 | 2.9±0.2 | 3.0±0.0 | 2.7±0.3 | 2.9±0.2 | 3.0±0.0 | 2.7±0.3 | 2.9±0.2 | 3.0±0.0 | 2.7±0.3 | 2.9±0.2 | 1.00 | |
|
| ||||||||||||||
| Noise | AAo | 2.5±0.4 | 2.4±0.2 | 2.5±0.3 | 2.7±0.5 | 2.4±0.2 | 2.6±0.4 | 2.6±0.4 | 2.4±0.2 | 2.5±0.3 | 2.5±0.4 | 2.5±0.4 | 2.5±0.3 | 0.92 |
| arch | 2.5±0.0 | 2.3±0.3 | 2.4±0.2 | 2.7±0.3 | 2.4±0.2 | 2.6±0.3 | 2.6±0.2 | 2.4±0.2 | 2.5±0.2 | 2.5±0.0 | 2.5±0.4 | 2.5±0.2 | 0.56 | |
| SAA | 2.4±0.2 | 2.5±0.4 | 2.5±0.3 | 2.6±0.4 | 2.5±0.4 | 2.6±0.4 | 2.5±0.4 | 2.5±0.4 | 2.5±0.3 | 2.4±0.2 | 2.6±0.4 | 2.5±0.3 | 0.92 | |
| DAo | 2.5±0.0 | 2.3±0.3 | 2.4±0.2 | 2.8±0.3 | 2.4±0.2 | 2.6±0.3 | 2.6±0.2 | 2.4±0.2 | 2.5±0.2 | 2.5±0.0 | 2.5±0.4 | 2.5±0.2 | 0.56 | |
|
| ||||||||||||||
| mean ± SD | 2.6±0.3 | 2.3±0.3 | 2.5±0.3 | 2.7±0.2 | 2.3±0.3 | 2.5±0.3 | 2.6±0.2 | 2.3±0.3 | 2.5±0.3 | 2.6±0.3 | 2.3±0.4 | 2.5±0.3 | 0.36 | |
The individual numbers represent mean ± SD of scores averaged over both observers and subjects. SD = Standard deviation, SAA = supra-aortic arteries, AAo = ascending aorta DAo = descending aorta
*
indicates multiple comparisons between all four scans, Kruskal-Wallis test.