Table 1 Comparison of segmentation of myocardium at risk by Segment MaR, manual second observer delineation, 2SD threshold, FWHm threshold and Otsu threshold to manual delineation by reference observer as bias in percentage of left ventricular mass (LVM) and as regression in R-value.
From: Automatic segmentation of myocardium at risk in T2-weighted cardiovascular magnetic resonance
MaR bias [% of LVM] | Regression R-value | |
|---|---|---|
Segment MaR | -1.9 ± 6.4 | 0.81 |
Manual second observer delineation | -2.3 ± 4.9 | 0.91 |
2SD threshold | -7.7 ± 11.4 | 0.38 |
FWHM threshold | -21.0 ± 9.9 | 0.41 |
Otsu threshold | 5.3 ± 9.6 | 0.47 |