Table 2 Left atrium volumes and functional parameters derived from MRI data
Healthy volunteers | ObT2D | HV/ObT2D | |
|---|---|---|---|
(n = 19) | (n = 20) | p value | |
LA EDV (mL) | 87.1 ± 24.7 | 95.8 ± 22.3 | |
LA ESV (mL) | 37.4 ± 14.7 | 40.5 ± 12.8 | |
Indexed LA EDV (mL/m2) | 44.7 ± 9.8 | 43.3 ± 9.3 | |
Indexed LA ESV (mL/m2) | 19.1 ± 6.1 | 18.2 ± 5.2 | |
LA EF (%) | 57.7 ± 6.1 | 58.0 ± 7.9 | |
Longitudinal strain (%) | |||
SlR | 33.2 ± 6.8 | 29.4 ± 8.4 | |
SlC | 16.5 ± 4.8 | 13.1 ± 5.0 | * |
SlA | 16.7 ± 3.9 | 16.8 ± 4.8 | |
SlA/SLR | 0.5 ± 0.1 | 0.6 ± 0.1 | |
Longitudinal strain rate (%/s) | |||
SRlS′ | 1.4 ± 0.3 | 1.4 ± 0.4 | |
SRlE′ | −1.5 ± 0.4 | −1.2 ± 0.6 | |
SRlA′ | −1.4 ± 0.4 | −1.5 ± 0.5 | |
SRlE′/SRlA′ | 1.2 ± 0.5 | 0.9 ± 0.3 | * |
Radial motion fraction (%) | |||
MrR | 35.1 ± 6.7 | 31.5 ± 9.1 | |
MrC | 17.2 ± 4.7 | 13.6 ± 5.9 | * |
MrA | 17.9 ± 4.3 | 18.2 ± 4.3 | |
MrA/MrR | 0.5 ± 0.1 | 0.6 ± 0.1 | * |
Radial relative velocity (%/s) | |||
VrS′ | 1.4 ± 0.3 | 1.5 ± 0.6 | |
VrE′ | −1.6 ± 0.5 | −1.3 ± 0.6 | |
VrA′ | −1.5 ± 0.5 | −1.8 ± 0.6 | |
VrE′/VrA′ | 1.2 ± 0.5 | 0.7 ± 0.2 | *** |
Decomposition of the radial motion fraction (%) | |||
MV centric cMrR | 34.3 ± 9.6 | 37.2 ± 10.6 | |
MV centric cMrC | 14.0 ± 5.7 | 11.3 ± 5.7 | |
MV centric cMrA | 20.3 ± 5.6 | 26.0 ± 6.3 | ** |
MV corrected perpendicular pMrR | 53.3 ± 17.8 | 42.5 ± 12.6 | * |
MV corrected perpendicular pMrC | 21.0 ± 15.2 | 14.0 ± 9.5 | |
MV corrected perpendicular pMrA | 32.3 ± 10.7 | 28.6 ± 10.7 | |