Table 1.
Multiple-channel fusion result
| SPGR | CSF (%) |
GM (%) |
WM (%) |
Oj (%) | Aj (%) | pj, qj (%) | |
|---|---|---|---|---|---|---|---|
| |
19.7 |
41.0 |
39.3 |
||||
| DWI/DTI | CSF (%) | Non-CSF (%) | |||||
| * | ADC | 11.7 | 88.3 | 45.2 | 74.4 | 50.4, 99.9 | |
| λ1 | 18.2 | 81.8 | 56.3 | 96.0 | 67.1, 99.6 | ||
| λ2 | 15.5 | 84.5 | 54.3 | 88.0 | 65.6, 99.9 | ||
| λ3 | 22.2 | 77.8 | 60.7 | 94.0 | 96.1, 99.9 | ||
| # | Y | 21.4 | 78.6 | 70.5 | 95.8 | ||
| DWI/DTI |
WM (%) |
Non-WM (%) |
|
|
|
|
|
| * | FA | 67.6 | 32.4 | 90.1 | 73.5 | 100, 93.4 | |
| RA | 62.4 | 37.6 | 87.4 | 77.4 | 100, 93.9 | ||
| VR | 58.6 | 41.4 | 85.2 | 80.3 | 100, 94.3 | ||
| # | Y | 49.5 | 50.5 | 86.3 | 88.5 |
*
marks the single-channel segmentation result, and
#
marks the fusion result. The third and fourth columns show the volume percentages of each tissue types in SPGR space or DWI/DTI space. The fifth column shows the volume overlap (Oj), which is determined as the tissue volume overlap ratio of each DWI/DTI channel against the corresponding tissue type in SPGR image. The sixth column shows volume agreement (Aj, please refer to Liu et al., 2006 for the definition of volume agreement). The seventh column shows the segmentation performance level of every single channel.