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Table 4 The DSC values of 3D U-Net in pelvic bones segmentation on external validation set grouped by vendors

From: Fully automated pelvic bone segmentation in multiparameteric MRI using a 3D convolutional neural network

Pelvic bones

DWI images

ADC images

V1# (n = 41)

V2$ (n = 11)

V3& (n = 8)

F value

p value

V1# (n = 41)

V2$ (n = 11)

V3& (n = 8)

F value

p value

Lumbar vertebra

0.82 ± 0.10*

0.76 ± 0.13

0.76 ± 0.06

2.307

0.109

0.85 ± 0.07

0.80 ± 0.06

0.80 ± 0.08

2.756

0.073

Sacrococcyx

0.84 ± 0.05*

0.81 ± 0.05*

0.73 ± 0.11

12.582

0.000

0.87 ± 0.04*

0.83 ± 0.05

0.83 ± 0.05

4.111

0.021

Ilium

0.82 ± 0.04*

0.78 ± 0.03

0.71 ± 0.07

27.470

0.000

0.87 ± 0.03*

0.87 ± 0.03*

0.81 ± 0.03

15.708

0.001

Acetabulum

0.80 ± 0.06*

0.71 ± 0.08

0.69 ± 0.08

13.876

0.000

0.84 ± 0.07*

0.82 ± 0.07*

0.70 ± 0.12

10.273

0.001

Femoral head

0.86 ± 0.06*

0.81 ± 0.06*

0.79 ± 0.10

4.053

0.023

0.88 ± 0.06*

0.88 ± 0.07*

0.82 ± 0.05

2.703

0.076

Femoral neck

0.84 ± 0.06*

0.82 ± 0.07*

0.74 ± 0.13

5.828

0.005

0.87 ± 0.08

0.88 ± 0.06

0.84 ± 0.03

0.870

0.425

Ischium

0.80 ± 0.10*

0.70 ± 0.08

0.70 ± 0.07

6.877

0.002

0.85 ± 0.06*

0.82 ± 0.04

0.78 ± 0.08

6.315

0.003

Pubis

0.69 ± 0.09*

0.61 ± 0.14

0.60 ± 0.11

6.212

0.004

0.77 ± 0.09*

0.78 ± 0.04*

0.67 ± 0.05

6.299

0.003

Average$

0.81 ± 0.04*

0.75 ± 0.05

0.71 ± 0.07

22.405

0.001

0.85 ± 0.04*

0.83 ± 0.03

0.78 ± 0.04

13.420

0.001

  1. Unless otherwise specified, data are mean DSC value ± standard deviations. DSC: Dice similarity coefficient
  2. #V1 indicates Vendor 1: 3.0 T Discovery; $V2 indicates Vendor 2: 1.5 T Intera; &V3 indicates Vendor 3: 1.5 T Avanto
  3. *indicates a significantly high DSC value