Table 7.
ASHS automatic segmentation accuracy in SR-T2w MRI relative to manual segmentations, measured by Dice similarity coefficient (DSC) using leave-one-out cross validation. Mean and standard deviation (in parentheses) are reported in the table.
| All (n=29) | aMCI (n=14) | NC (n=15) | |
|---|---|---|---|
| CA1 | 0.770 (0.031) | 0.761 (0.032)* | 0.778 (0.027) |
| CA2 | 0.515 (0.122) | 0.477 (0.121)* | 0.551 (0.113) |
| CA3 | 0.473 (0.112) | 0.464 (0.097) | 0.481 (0.126) |
| CAb | 0.765 (0.031) | 0.756 (0.032)* | 0.773 (0.029) |
| DG | 0.801 (0.032) | 0.795 (0.032) | 0.807 (0.031) |
| SUB | 0.723 (0.047) | 0.723 (0.045) | 0.723 (0.050) |
| HIPPOb | 0.874 (0.020) | 0.872 (0.021) | 0.876 (0.019) |
| ERC | 0.769 (0.058) | 0.760 (0.066) | 0.777 (0.049) |
| BA35 | 0.681 (0.077) | 0.677 (0.094) | 0.685 (0.059) |
| BA36 | 0.765 (0.058) | 0.763 (0.070) | 0.767 (0.045) |
| PRCb | 0.780 (0.052) | 0.773 (0.065) | 0.787 (0.037) |
| PHC | 0.772 (0.049) | 0.769 (0.054) | 0.776 (0.044) |
Note:
*
p < 0.05, comparing with NC group, tested by two-tailed two-sample t-test.
b
DSCs for the compound labels (in italics) are measured using the merged label of corresponding sub-labels (CA: CA1–3; HIPPO: CA1–3, DG, SUB; PRC: BA35, BA36).