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Percentage ROI widths from the three apical views as adjusted by an expert to obtain reference manually adjusted GLS and as presented by the AFI system to obtain default semi-automated GLS
| ROI width | GLS Manually adjusted by an expert (n = 150) |
GLS Default semi-automated (n = 150) |
|---|---|---|
| Narrow (%) | 9 | 0 |
| Medium (%) | 85 | 15 |
| Wide (%) | 6 | 78 |
| Extra wide (%) | 0 | 7 |
GLS global longitudinal strain, ROI region of interest
