Table 2 C-index of radiomics signature in disease-free survival prediction
Radiomics signature | C-index (95% confidence interval) | ||
|---|---|---|---|
Training set | Internal testing set | External testing set | |
US-intra-radiomics signature | 0.707 (0.608–0.807) | 0.675 (0.539–0.811) | 0.645 (0.501–0.790) |
US-peri (1 pixel)-radiomics signature | 0.720 (0.622–0.819) | 0.650 (0.513–0.787) | 0.647 (0.502–0.791) |
US-peri (2 pixel)-radiomics signature | 0.802 (0.713–0.891) | 0.676 (0.541–0.812) | 0.597 (0.451–0.742) |
US-peri (3 pixel)-radiomics signature | 0.848 (0.767–0.929) | 0.610 (0.472–0.749) | 0.639 (0.494–0.783) |
US-peri (4 pixel)-radiomics signature | 0.812 (0.725–0.900) | 0.625 (0.487–0.763) | 0.642 (0.497–0.787) |
US-peri (5 pixel)-radiomics signature | 0.761 (0.667–0.855) | 0.702 (0.568–0.835) | 0.553 (0.408–0.698) |
US-peri (6 pixel)-radiomics signature | 0.760 (0.665–0.854) | 0.717 (0.585–0.850) | 0.646 (0.502–0.791) |
US-peri (7 pixel)-radiomics signature | 0.729 (0.631–0.826) | 0.685 (0.550–0.820) | 0.596 (0.451–0.742) |
US-gross (1 pixel)-radiomics signature | 0.741 (0.644–0.837) | 0.682 (0.547–0.817) | 0.656 (0.512–0.800) |
US-gross (2 pixel)-radiomics signature | 0.804 (0.716–0.893) | 0.689 (0.554–0.824) | 0.597 (0.451–0.742) |
US-gross (3 pixel)-radiomics signature | 0.849 (0.769–0.930) | 0.618 (0.480–0.756) | 0.640 (0.495–0.784) |
US-gross (4 pixel)-radiomics signature | 0.816 (0.730–0.903) | 0.639 (0.502–0.777) | 0.644 (0.499–0.788) |
US-gross (5 pixel)-radiomics signature | 0.776 (0.684–0.869) | 0.709 (0.575–0.842) | 0.582 (0.437–0.727) |
US-gross (6 pixel)-radiomics signature | 0.774 (0.682–0.867) | 0.722 (0.590–0.854) | 0.654 (0.510–0.798) |
US-gross (7 pixel)-radiomics signature | 0.748 (0.652–0.844) | 0.694 (0.560–0.829) | 0.609 (0.463–0.754) |
MRI-intra-radiomics signature | 0.651 (0.549–0.753) | 0.636 (0.498–0.774) | 0.696 (0.555–0.838) |
MRI-peri (1 mm)-radiomics signature | 0.759 (0.664–0.854) | 0.639 (0.501–0.777) | 0.588 (0.442–0.733) |
MRI-peri (2 mm)-radiomics signature | 0.688 (0.588–0.789) | 0.670 (0.534–0.806) | 0.651 (0.506–0.795) |
MRI-peri (3 mm)-radiomics signature | 0.681 (0.580–0.782) | 0.654 (0.517–0.791) | 0.719 (0.581–0.858) |
MRI-peri (4 mm)-radiomics signature | 0.685 (0.584–0.786) | 0.653 (0.516–0.790) | 0.729 (0.591–0.867) |
MRI-peri (5 mm)-radiomics signature | 0.681 (0.581–0.782) | 0.660 (0.523–0.797) | 0.584 (0.439–0.730) |
MRI-peri (6 mm)-radiomics signature | 0.676 (0.575–0.777) | 0.677 (0.541–0.813) | 0.557 (0.412–0.702) |
MRI-peri (7 mm)-radiomics signature | 0.680 (0.579–0.781) | 0.674 (0.538–0.810) | 0.567 (0.422–0.712) |
MRI-gross (1 mm)-radiomics signature | 0.658 (0.556–0.760) | 0.635 (0.497–0.773) | 0.696 (0.554–0.837) |
MRI-gross (2 mm)-radiomics signature | 0.699 (0.599–0.799) | 0.684 (0.549–0.819) | 0.684 (0.542–0.827) |
MRI-gross (3 mm)-radiomics signature | 0.685 (0.584–0.785) | 0.665 (0.529–0.802) | 0.729 (0.592–0.867) |
MRI-gross (4 mm)-radiomics signature | 0.680 (0.579–0.780) | 0.665 (0.528–0.801) | 0.733 (0.596–0.871) |
MRI-gross (5 mm)-radiomics signature | 0.674 (0.573–0.775) | 0.652 (0.515–0.789) | 0.693 (0.552–0.835) |
MRI-gross (6 mm)-radiomics signature | 0.680 (0.579–0.781) | 0.665 (0.529–0.802) | 0.651 (0.507–0.795) |
MRI-gross (7 mm)-radiomics signature | 0.679 (0.578–0.779) | 0.660 (0.523–0.797) | 0.668 (0.524–0.811) |
Multi-modal radiomics signature* | 0.777 (0.684–0.869) | 0.734 (0.603–0.864) | 0.708 (0.568–0.848) |