Deep learning deep learning 7 Convolutional neural networks 6 convolutional neural network 4 Article 3 Biological organs 3 Computerized tomography 3 Deep neural networks 3 Feature extraction 3 Humans 3 Image enhancement 3 diagnostic imaging 3 human 3 nuclear magnetic resonance imaging 3 'current 2 Computer aided diagnosis 2 Computer vision 2 Convolution 2 Convolutional neural network 2 Deep Learning 2 Diagnostic accuracy 2 Diseases 2 Features extraction 2 Network architecture 2 Neural Networks, Computer 2 Neural networks 2 Spatial attention 2 State of the art 2 Three dimensional displays 2 Three-dimensional display 2