Insights into Imaging

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
Pelvic bones	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

Unless otherwise specified, data are mean DSC value ± standard deviations. DSC: Dice similarity coefficient
^#The data in training set were collected between August 2018 and August 2019
^*The data in external set were collected between January 2020 and March 2020
^$Average indicates the mean value of all the pelvic bones

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