Table 3.
Statistical analysis of spatial and temporal under sampling subject data (n = 10)
| Aortic parameters | Standard | Reduced in-plane (by 25%) | P-valuea | Reduced in-plane (by 50%) | P-valuea | Reduced temporal (by 50%) | P-valuea |
|---|---|---|---|---|---|---|---|
| Area (cm2) | 7.06 ± 2.60 | 7.23 ± 2.68 | <0.0001 | 7.25 ± 2.77 | 0.004 | 7.14 ± 2.63 | 0.085 |
| Strain (%) | 8.20 ± 5.81 | 8.41 ± 5.76 | 0.784 | 11.95 ± 8.45 | 0.005 | 6.51 ± 4.81 | 0.008 |
| PWV (m/s) | 9.60 ± 5.11 | 9.24 ± 4.49 | 0.168 | 9.13 ± 4.56 | 0.056 | 13.31 ± 14.51 | 0.295 |
Value are mean ± SD. SD, standard deviation. Area is included all aortic areas (maximum ascending area, minimum ascending area, maximum descending area, and minimum descending area). Strain is included ascending aortic strain and descending aortic strain. PWV: pulse wave velocity. Standard: original data. Reduced in-plane: number of matrix was reduced. Reduced temporal: under sampling of images by 50% from standard. Number of images is 15 per cycle.
aPaired t-test.