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Table 3 The DSC values of 3D U-Net in pelvic bones segmentation on DWI and ADC images

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

Pelvic bones DWI images ADC images
Testing Set# (N = 28) External Set* (N = 60) t value p value Testing set (N = 28) External set (N = 60) t value p value
Lumbar vertebra 0.83 ± 0.06 0.81 ± 0.10 1.220 0.226 0.87 ± 0.05 0.83 ± 0.07 2.564 0.012
Sacrococcyx 0.84 ± 0.04 0.84 ± 0.07 1.193 0.236 0.86 ± 0.04 0.85 ± 0.05 0.667 0.507
Ilium 0.82 ± 0.06 0.80 ± 0.10 1.275 0.206 0.87 ± 0.04 0.86 ± 0.03 0.549 0.584
Acetabulum 0.77 ± 0.07 0.77 ± 0.08 -0.007 0.994 0.82 ± 0.08 0.82 ± 0.08 0.256 0.799
Femoral head 0.85 ± 0.06 0.84 ± 0.07 0.841 0.403 0.89 ± 0.06 0.87 ± 0.06 1.437 0.154
Femoral neck 0.84 ± 0.06 0.82 ± 0.08 1.402 0.165 0.89 ± 0.04 0.87 ± 0.08 1.660 0.101
Ischium 0.81 ± 0.07 0.77 ± 0.10 1.819 0.072 0.85 ± 0.07 0.84 ± 0.06 0.894 0.374
Pubis 0.68 ± 0.08 0.65 ± 0.11 0.922 0.359 0.77 ± 0.06 0.76 ± 0.08 0.694 0.490
Average$ 0.80 ± 0.05 0.79 ± 0.06 1.452 0.150 0.85 ± 0.04 0.84 ± 0.04 1.788 0.077
  1. Unless otherwise specified, data are mean DSC value ± standard deviations. DSC: Dice similarity coefficient
  2. #The data in training set were collected between August 2018 and August 2019
  3. *The data in external set were collected between January 2020 and March 2020
  4. $Average indicates the mean value of all the pelvic bones