Gastrointestinal stromal tumors Computerized tomography 2 Tumors 2 18-f-fluorodeoxyglucose 1 Amino acids 1 Apparent diffusion coefficient 1 Biological organs 1 Chemotherapy 1 Clinical manifestation 1 Contrast-enhanced CT 1 Convolution 1 Convolutional neural net 1 Convolutional neural networks 1 Diagnosis 1 Diffusion weighted imaging 1 Enzyme inhibition 1 FDG PET/CT 1 Features extraction 1 Functional parameters 1 Gastrointestinal stromal tumor 1 Graph theory 1 Graph-based 1 Graphic methods 1 Image enhancement 1 Image fusion 1 Image segmentation 1 Images segmentations 1 Magnetic resonance imaging 1 Medical images processing 1 Medical imaging 1