Table 3 CMR and 4D Flow characteristics
CMR Characteristics | Acute scan (n = 50) | 12-month scan (n = 50) | P value |
|---|---|---|---|
Days from STEMI to scan | 5 ± 2 | 378 ± 23 | < 0.01 |
LVEDV (mls) | 152 ± 41 | 164 ± 52 | 0.23 |
LVEDVI (mls/m2) | 79 ± 18 | 85 ± 23 | 0.12 |
LVSV (mls) | 64 ± 14 | 77 ± 15 | < 0.01 |
LVEF (%) | 43 ± 9 | 49 ± 10 | < 0.01 |
Infarct size (g) | 14 ± 11 | 9 ± 9 | < 0.01 |
Infarct size (% of total LV mass) | 22 ± 14 | 17 ± 17 | < 0.01 |
MVO (n) | 23 (46%) | - | - |
MVO (g) | 1.4 ± 2.8 | 0.0 ± 0.0 | < 0.01 |
4D Flow CMR Characteristics from acute scan | |||
KE parameters (normalised for LVEDV) | |||
Full R-R average energy (μJ/ml) | 9.4 ± 2.7 | – | – |
Full R-R minimal energy (μJ/ml) | 1.3 ± 1.0 | – | – |
Systolic average energy (μJ/ml) | 10.8 ± 3.9 | – | – |
Systolic In-plane flow (%) | 45 ± 11 | – | – |
Diastolic average energy (μJ/ml) | 8.7 ± 2.9 | – | – |
LV washout parameters | – | – | |
Direct flow (%) | 42 ± 19 | – | – |
Retained volume (%) | 16 ± 7 | – | – |
Delayed ejection flow (%) | 19 ± 9 | – | – |
Residual volume (%) | 23 ± 12 | – | – |