Table 2 T1 mapping—differences between diastole and systole.
From: Left ventricular T1-mapping in diastole versus systole in patients with mitral regurgitation
Diastole | 95% Confidence interval | Lower | Upper | P Value | |||
|---|---|---|---|---|---|---|---|
N | Mean ± Std deviation | Mean ± Std deviation | |||||
All | Native T1 (ms) | 202 | 988 ± 29 | 985 ± 26 | − 0.14 | 6.14 | 0.061 |
Post-contrast T1 (ms) | 199 | 459 ± 33 | 462 ± 32 | − 4.55 | 0.02 | 0.052 | |
R2 | 411 | 96.0 ± 1.4 | 96.2 ± 1.4 | − 0.34 | − 0.18 | < 0.001* | |
Males | ECV fraction (%) | 129 | 26.5 ± 2.9 | 26.6 ± 2.5 | − 0.42 | 0.20 | 0.489 |
iECV (%/m2) | 129 | 18.9 ± 3.8 | 19.0 ± 3.8 | − 0.30 | 0.14 | 0.482 | |
Native T1 (ms) | 131 | 984 ± 27 | 982 ± 26 | − 1.61 | 6.15 | 0.251 | |
Post-contrast T1 (ms) | 128 | 470 ± 25 | 470 ± 22 | − 2.64 | 1.63 | 0.640 | |
R2 | 264 | 95.8 ± 1.4 | 96.1 ± 1.3 | − 0.39 | − 0.19 | < 0.001* | |
Females | ECV fraction (%) | 70 | 28.5 ± 3.0 | 28.4 ± 2.7 | − 0.37 | 0.62 | 0.625 |
iECV (%/m2) | 70 | 15.3 ± 3.8 | 15.3 ± 3.8 | − 0.25 | 0.30 | 0.852 | |
Native T1 (ms) | 71 | 996 ± 32 | 991 ± 25 | − 1.07 | 9.77 | 0.115 | |
Post-contrast T1 (ms) | 71 | 440 ± 38 | 446 ± 40 | − 10.55 | − 0.33 | 0.037* | |
R2 | 143 | 96.2 ± 1.3 | 96.4 ± 1.4 | − 0.05 | − 2.65 | 0.009* | |
