Table 2. Evaluation of automatic fetal brain segmentation.
We report mean (standard deviation) for the Dice score (DSC) in percentages and the Hausdorff distance at 95% (HD95) in millimeters for all tissue types. Brain: whole brain that includes all the tissue types below, WM: white matter, Vent: ventricular system, Cer: cerebellum, CSF: cerebrospinal fluid, ECSF: extra-axial CSF, CGM: cortical grey matter, DGM: deep grey matter, BS: brainstem.
| Atlas | Cohort | Metric | Brain | WM | Vent | Cer | ECSF | CGM | DGM | BS |
|---|---|---|---|---|---|---|---|---|---|---|
| Normal 20 | Normal | DSC | 97.5
(1.2) |
89.5
(3.2) |
84.2
(3.5) |
89.2
(3.8) |
87.8
(3.6) |
74.4
(8.0) |
85.2
(3.7) |
82.0
(3.4) |
| HD95 | 1.5
(0.9) |
1.7
(0.9) |
1.3
(0.6) |
1.4
(0.4) |
1.3
(0.7) |
1.4
(0.9) |
2.2
(0.7) |
2.3
(0.5) |
||
| Normal 20 | Spina Bifida | DSC | 91.4
(11.4) |
69.4
(19.5) |
76.6
(17.3) |
53.7
(32.2) |
52.0
(36.5) |
45.0
(25.0) |
69.9
(19.7) |
62.1
(23.9) |
| HD95 | 3.6
(3.4) |
4.5
(3.4) |
4.0
(3.8) |
7.0
(7.3) |
10.7
(10.6) |
4.2
(3.5) |
4.3
(3.4) |
4.8
(5.5) |
||
| Spina Bifida | Spina Bifida | DSC | 92.8
(4.9) |
83.3
(6.8) |
87.1
(8.9) |
74.3
(15.1) |
59.9
(26.8) |
54.6
(16.7) |
79.2
(5.4) |
73.0
(9.9) |
| HD95 | 3.1
(1.7) |
3.0
(1.5) |
1.9
(1.3) |
3.2
(5.2) |
8.6
(9.1) |
2.8
(1.5) |
2.9
(0.8) |
2.8
(1.0) |