Table 1.
Absolute mean difference in NWMV between original and filled images from the 1.5 T OASIS images. Results are presented for both SPM8 and FAST segmentation methods. Lesion volume is ranged by size intervals with n = 6 by interval. Values indicate the mean and standard deviation of the absolute difference in volume (μ ± σ) of each lesion-filling method at a current lesion interval.
| Method/lesion(ml) | 0.5–4 ml (n = 6) | 4–11 ml (n = 6) | 11–20 ml (n = 6) | 25–36 ml (n = 6) | >36 ml (n = 6) |
|---|---|---|---|---|---|
| SPM8 segmentation method | |||||
| NONE | 0.47 ± 0.50 | 1.54 ± 0.95 | 2.71 ± 0.60 | 7.09 ± 1.42 | 10.64 ± 3.10 |
| MASKED | 1.56 ± 0.94 | 2.42 ± 0.70 | 1.49 ± 0.43 | 3.16 ± 1.35 | 3.91 ± 1.76 |
| MAGON | 0.03 ± 0.03 | 0.08 ± 0.07 | 0.24 ± 0.25 | 0.32 ± 0.19 | 1.95 ± 1.25 |
| FSL-L | 0.03 ± 0.01 | 0.10 ± 0.05 | 0.31 ± 0.15 | 0.55 ± 0.07 | 2.38 ± 1.26 |
| LEAP | 0.04 ± 0.04 | 0.10 ± 0.05 | 0.19 ± 0.05 | 0.44 ± 0.22 | 0.92 ± 0.42 |
| SLF | 0.03 ± 0.03 | 0.04 ± 0.03 | 0.09 ± 0.06 | 0.23 ± 0.20 | 0.55 ± 0.23 |
| FAST segmentation method | |||||
| NONE | 0.21 ± 0.21 | 0.71 ± 0.38 | 1.88 ± 0.56 | 4.55 ± 2.04 | 8.95 ± 4.36 |
| MASKED | 9.52 ± 1.20 | 8.36 ± 1.30 | 11.53 ± 4.91 | 7.42 ± 1.08 | 5.79 ± 1.92 |
| MAGON | 0.08 ± 0.04 | 0.25 ± 0.22 | 0.91 ± 0.63 | 1.28 ± 0.39 | 6.24 ± 2.74 |
| FSL-L | 0.03 ± 0.02 | 0.05 ± 0.05 | 0.30 ± 0.21 | 0.58 ± 0.19 | 2.13 ± 1.22 |
| LEAP | 0.08 ± 0.07 | 0.34 ± 0.10 | 0.65 ± 0.13 | 1.07 ± 0.66 | 2.50 ± 0.80 |
| SLF | 0.07 ± 0.05 | 0.13 ± 0.09 | 0.22 ± 0.15 | 0.36 ± 0.30 | 0.42 ± 0.16 |