Flowchart of unsharp mask image sharpening technology.

Flowchart of unsharp mask image sharpening technology.</p

Performance comparison of A-CNN with CNN-1, CNN-2 and CNN-3.

Performance comparison of A-CNN with CNN-1, CNN-2 and CNN-3.</p

Distribution of pulmonary nodule size in the LUNA16 dataset.

Distribution of pulmonary nodule size in the LUNA16 dataset.</p

FROC curve for pulmonary nodule detection.

FROC curve for pulmonary nodule detection.</p

Contrast graph of ReLU function and RT-ReLU function.

Contrast graph of ReLU function and RT-ReLU function.</p

Comparison of true pulmonary nodules and false positive pulmonary nodules.

Comparison of true pulmonary nodules and false positive pulmonary nodules.</p

A comparison of pulmonary nodules detection results between A-CNN and the best results of other methods.

A comparison of pulmonary nodules detection results between A-CNN and the best results of other methods.</p

Sensitivity of pulmonary nodules compared with other groups.

Sensitivity of pulmonary nodules compared with other groups.</p

The structure of the neural network.

The structure of the neural network.</p

A neural network structure for detecting pseudo positive pulmonary nodules.

A neural network structure for detecting pseudo positive pulmonary nodules.</p