MI size quantification using different LGE sequences
| Manual | Other thresholds | p Value | Manual | Other thresholds | p Value |
|---|---|---|---|---|---|
| FB MOCO LGE sequence (n=16) | |||||
| Acute MI size (%LV) | Chronic MI size (%LV) | ||||
| 23.4±15.9 | 5-SD 26.3±17.4 | 0.02* | 17.1±12.3 | 5-SD 19.7±13.1 | 0.001* |
| 6-SD 24.3±15.9 | 0.13 | 6-SD 18.0±12.2 | 0.21 | ||
| Otsu 25.9±16.8 | 0.003* | Otsu 18.1±11.7 | 0.03* | ||
| FWHM 22.6±15.5 | 0.001* | FWHM 14.3±9.7 | 0.005* | ||
| FLASH LGE sequence (n=24) | |||||
| Acute MI size (%LV) | Chronic MI size (%LV) | ||||
| 26.0±12.2 | 5-SD 28.1±12.8 | <0.0001* | 17.5±8.5 | 5-SD 19.3±8.7 | 0.001* |
| 6-SD 25.3±12.1 | 0.15 | 6-SD 16.7±7.8 | 0.25 | ||
| Otsu 30.1±12.1 | <0.0001* | Otsu 20.3±9.7 | 0.001* | ||
| FWHM 25.0±11.5 | 0.24 | FWHM 15.7±8.2 | 0.033* | ||
*denotes statistical significance.
FB MOCO LGE, free breathing and motion corrected late gadolinium enhancement; FLASH LGE, fast low-angle shot late gadolinium enhancement; FWHM, full width half maximum; LV, left ventricle; MI, myocardial infarct; MVO, microvascular obstruction.