Abstract
Automatic and accurate Intrahepatic Cholangiocarcinoma (ICC) segmentation in non-enhanced abdominal CT images can provide significant assistance for clinical decision making. While deep neural networks offer an effective tool for ICC segmentation, collecting large amounts of annotated data for deep network training may not be practical for this kind of applications. To this end, transfer learning approaches utilize abundant data from similar tasks and transfer the prior-learned knowledge to achieve better results. In this paper, we propose a novel Dual-level Selective Transfer Learning (DSTL) model for ICC segmentation, which selects similar information at global and local levels from a source dataset and produces transfer learning using the selected hierarchical information. Besides the basic segmentation networks, our DSTL model is composed of a global information selection network (GISNet) and a local information selection network (LISNet). The GISNet is utilized to output weights for global information selection and to mitigate the gap between the source and target tasks. The LISNet outputs weights for local information selection. Experimental results show that our DSTL model achieves superior ICC segmentation performance and outperforms the original and image selection based transfer learning and joint training strategies. To the best of our knowledge, this is the first method for ICC segmentation in non-enhanced abdominal CT.
W. Wang, Q. Song and J. Zhou—The first three authors contributed equally.
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Acknowledgement
The research of J. Wu was partially supported by ZUEF under grants No. K17-511120-017 and No. K17-518051-021, NSFC under grant No. 61672453, and the National Key R&D Program of China under grant No. 2018AAA0102100, No. 2019YFC0118802, and No. 2019YFB1404802. The research of D.Z. Chen was partially supported by NSF Grant CCF-1617735.
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Wang, W. et al. (2020). Dual-Level Selective Transfer Learning for Intrahepatic Cholangiocarcinoma Segmentation in Non-enhanced Abdominal CT. In: Martel, A.L., et al. Medical Image Computing and Computer Assisted Intervention – MICCAI 2020. MICCAI 2020. Lecture Notes in Computer Science(), vol 12261. Springer, Cham. https://doi.org/10.1007/978-3-030-59710-8_7
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