Table 2 The overview of dataset for the training of U-Net and 3D DenseNet.

From: Rib fracture detection system based on deep learning

Cohorts

U-Net

3D DenseNet

No. CT images

No. Fracture blocks

No. Normal blocks

Training

4496

91,574

50,078,825

Validation

3145

5981

3,323,151

Testing

3568

5992

3,452,162