Table 1 Results of direct comparison of predicted and reference masks on held-out test dataset.

From: Automatic segmentation of trabecular and cortical compartments in HR-pQCT images using an embedding-predicting U-Net and morphological post-processing

  

Mean (SD)

(Min, Max)

Radius (n = 185)

Cortical Mask

DSC

0.98 (0.02)

(0.90, 0.99)

JSC

0.94 (0.03)

(0.82, 0.98)

Trabecular Mask

DSC

0.99 (< 0.01)

(0.97, > 0.99)

JSC

0.99 (0.01)

(0.94, 0.99)

Endosteal Surface

Hausdorff (mm)

0.6 (0.3)

(0.2, 1.9)

ASSD (mm)

0.05 (0.02)

(0.02, 0.18)

Periosteal Surface

Hausdorff (mm)

0.3 (0.2)

(0.1, 1.0)

ASSD (mm)

0.02 (0.01)

(0.01, 0.06)

Tibia (n = 201)

Cortical Mask

DSC

0.97 (0.02)

(0.90, 0.98)

JSC

0.93 (0.03)

(0.81, 0.97)

Trabecular Mask

DSC

0.99 (< 0.01)

(0.98, > 0.99)

JSC

0.99 (0.01)

(0.96, > 0.99)

Endosteal Surface

Hausdorff (mm)

0.9 (0.4)

(0.3, 3.5)

ASSD (mm)

0.08 (0.03)

(0.04, 0.21)

Periosteal Surface

Hausdorff (mm)

0.4 (0.3)

(0.2, 2.7)

ASSD (mm)

0.02 (0.01)

(0.01, 0.09)

  1. DSC Dice similarity coefficient, JSC Jaccard similarity coefficient, Hausdorff maximum symmetric surface distance, ASSD average symmetric surface distance.
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