Abstract
Classifying the malignancy of prostate lesions from MRI images is crucial in diagnosing prostate cancer at the early stage. In clinical examination, radiologists usually focus on the most salient and distinctive regions to diagnose. However, in many state-of-the-art CNN based methods, the conventional convolution operation extracts the features equally importantly, which leads to an excessive feature learning process on the uninterested regions. To address this challenge, we propose a saliency transfer learning network that allows the model to focus on the salient and influential regions automatically. Moreover, a pyramid central-crop pooling scheme is employed to extract the multi-scale, centric-visual, and salient features from different layers. To validate the effectiveness of the proposed model, extensive experiments are conducted on prostate cancer and non-cancer MRI dataset, the experimental results demonstrate that our proposed model could gain competitive performance (Accuracy 94.9%, Sensitivity 96.7%, Specificity 93.5%, AUC 0.989) on this classification task.
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Acknowledgements
This work was supported by the Shanghai Sailing Program (21YF1431600), and the General Program of the National Natural Science Foundation of China (NSFC) under Grant 62102259. The authors declared that they have no conflicts of interest in this work.
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Zhang, G., Jia, M., Gao, L. et al. Saliency Transfer Learning and Central-Cropping Network for Prostate Cancer Classification. Neural Process Lett 55, 2391–2403 (2023). https://doi.org/10.1007/s11063-022-10999-z
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DOI: https://doi.org/10.1007/s11063-022-10999-z