Table 3 Peak strains and torsions from DENSE and HARP at 3T and 1.5T (mean ± standard deviation)
From: Validation of in vivo 2D displacements from spiral cine DENSE at 3T
3T | 1.5T | |||||
|---|---|---|---|---|---|---|
DENSE Obs 1 | DENSE Obs 2 | HARP | DENSE Obs 1 | DENSE Obs 2 | HARP | |
Circumferential strain (%) | ||||||
Base | −15.9 ± 1.8 | −16.4 ± 1.6 | −16.4 ± 2.6 | −15.0 ± 2.3 | −16.6 ± 2.7 | −16.5 ± 2.0 |
Mid | −18.1 ± 2.1 | −19.0 ± 2.3 | −17.9 ± 1.9 | −18.2 ± 0.8 | −18.7 ± 0.8 | −18.2 ± 1.6 |
Apex | −21.0 ± 2.4 | −22.2 ± 2.7 | −20.4 ± 3.2 | −19.7 ± 1.9 | −21.4 ± 2.5 | −21.9 ± 1.4 |
Radial strain (%) | ||||||
Base | 52.2 ± 12.6 | 61.4 ± 21.1 | 45.8 ± 18.5 | 62.4 ± 24.0 | 60.9 ± 26.0 | 47.9 ± 18.0 |
Mid | 28.4 ± 7.1 | 29.7 ± 8.6 | 34.0 ± 26.4 | 41.6 ± 10.1 | 33.7 ± 8.1 | 30.7 ± 10.5 |
Apex | 29.2 ± 7.7 | 31.0 ± 11.4 | 45.9 ± 13.4 | 34.6 ± 14.9 | 30.6 ± 13.4 | 49.5 ± 19.5 |
Longitudinal strain (%) | ||||||
Four-chamber | −14.7 ± 1.4 | −14.3 ± 1.7 | −13.0 ± 1.2 | −12.3 ± 1.8 | −13.1 ± 1.3 | −14.3 ± 2.7 |
Torsion (deg/mm) | ||||||
Global | 0.38 ± 0.07 | 0.39 ± 0.07 | 0.24 ± 0.07 | 0.31 ± 0.06 | 0.32 ± 0.06 | 0.19 ± 0.05 |