Table 3 Comparison of pre-/post-contrast myocardium and blood T1 times and ECV between different diastolic/systolic and fixed/HRD scheme T1 maps in patients with persistent AF
1 | 2 | 3 | 4 | P value | |
|---|---|---|---|---|---|
Diastole with fixed scheme | Systole with fixed scheme | Diastole with HRD scheme | Systole with HRD scheme | ||
Overall LV myocardium native T1 times (ms) | 1272.76 ± 39.30 | 1263.29 ± 40.71 | 1311.00 ± 44.51 | 1304.83 ± 52.01 | 1 vs. 2: <0.01 |
3 vs. 4: <0.05 | |||||
1 vs. 3: <0.01 | |||||
2 vs. 4: <0.01 | |||||
Overall LV myocardium post-contrast T1 times (ms) | 543.42 ± 57.04 | 551.07 ± 57.49 | 571.37 ± 66.16 | 588.94 ± 64.31 | 1 vs. 2: <0.05 |
3 vs. 4: >0.05 | |||||
1 vs. 3: >0.05 | |||||
2 vs. 4: <0.05 | |||||
Overall LV pre-contrast blood T1 times (ms) | 1819.40 ± 136.03 | 1797.49 ± 132.23 | 1796.32 ± 132.02 | 1766.30 ± 133.51 | 1 vs. 2: >0.05 |
3 vs. 4: >0.05 | |||||
1 vs. 3: >0.05 | |||||
2 vs. 4: >0.05 | |||||
Overall LV post-contrast blood T1 times (ms) | 359.61 ± 53.34 | 366.06 ± 52.73 | 393.03 ± 61.73 | 400.18 ± 64.13 | 1 vs. 2: <0.01 |
3 vs. 4: >0.05 | |||||
1 vs. 3: <0.05 | |||||
2 vs. 4: <0.05 | |||||
Overall LV ECV (%) | 26.70 ± 2.45 | 26.41 ± 2.73 | 28.02 ± 3.48 | 27.18 ± 3.36 | 1 vs. 2: >0.05 |
3 vs. 4: >0.05 | |||||
1 vs. 3: <0.05 | |||||
2 vs. 4: <0.05 |