Manual contouring | Other techniques | p Value | Manual contouring | Other techniques | p Value |
---|---|---|---|---|---|
Without MVO (n=14) | |||||
Acute MI size (%LV) | Chronic MI size (%LV) | ||||
12.6±8.9 | 5-SD 14.4±10.8 | 0.039* | 7.7±5.9 | 5-SD 9.9±7.3 | 0.02* |
6-SD 12.2±9.3 | 0.47 | 6-SD 8.6±6.8 | 0.10 | ||
Otsu 15.9±10.4 | 0.002* | Otsu 9.5±6.6 | 0.03* | ||
FWHM 12.0±8.4 | 0.49 | FWHM 6.9±4.6 | 0.11 | ||
With MVO (n=26) | |||||
Acute MI size (%LV) | Chronic MI size (%LV) | ||||
31.7±10.8 | 5-SD 34.4±11.3 | <0.0001* | 22.5±7.8 | 5-SD 24.7±8.1 | <0.0001* |
6-SD 31.7±11.0 | 0.95 | 6-SD 21.8±7.7 | 0.38 | ||
Otsu 35.1±10.5 | <0.0001* | Otsu 24.8±7.8 | 0.003* | ||
FWHM 30.5±10.3 | 0.087 | FWHM 19.6±6.9 | 0.002* |
*denotes statistical significance.
FWHM, full width half maximum; LV, left ventricle; MI, myocardial infarct; MVO, microvascular obstruction.