Two-Stage Classification Method for MSI Status Prediction Based on Deep Learning Approach
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Korea Institute of Medical Microrobotics, Gwangju 506813, Korea
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Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 427724, Korea
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Department of Computer Convergence Software, Korea University, Sejong 826802, Korea
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Electronics and Telecommunications Research Institute, Daejeon 008242, Korea
5
Robotics Engineering Convergence and Department of Artificial Intelligence Convergence, Chonnam National University, Gwangju 506813, Korea
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2021, 11(1), 254; https://doi.org/10.3390/app11010254
Received: 11 November 2020
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Revised: 23 December 2020
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Accepted: 24 December 2020
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Published: 29 December 2020
Colorectal cancer is one of the most common cancers with a high mortality rate. The determination of microsatellite instability (MSI) status in resected cancer tissue is vital because it helps diagnose the related disease and determine the relevant treatment. This paper presents a two-stage classification method for predicting the MSI status based on a deep learning approach. The proposed pipeline includes the serial connection of the segmentation network and the classification network. In the first stage, the tumor area is segmented from the given pathological image using the Feature Pyramid Network (FPN). In the second stage, the segmented tumor is classified as MSI-L or MSI-H using Inception-Resnet-V2. We examined the performance of the proposed method using pathological images with 10× and 20× magnifications, in comparison with that of the conventional multiclass classification method where the tissue type is identified in one stage. The F1-score of the proposed method was higher than that of the conventional method at both 10× and 20× magnifications. Furthermore, we verified that the F1-score for 20× magnification was better than that for 10× magnification.
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Keywords:
colorectal cancer; pathological image; MSI status; deep learning; segmentation; classification
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MDPI and ACS Style
Lee, H.; Seo, J.; Lee, G.; Park, J.; Yeo, D.; Hong, A. Two-Stage Classification Method for MSI Status Prediction Based on Deep Learning Approach. Appl. Sci. 2021, 11, 254. https://doi.org/10.3390/app11010254
AMA Style
Lee H, Seo J, Lee G, Park J, Yeo D, Hong A. Two-Stage Classification Method for MSI Status Prediction Based on Deep Learning Approach. Applied Sciences. 2021; 11(1):254. https://doi.org/10.3390/app11010254
Chicago/Turabian StyleLee, Hyunseok, Jihyun Seo, Giwan Lee, Jongoh Park, Doyeob Yeo, and Ayoung Hong. 2021. "Two-Stage Classification Method for MSI Status Prediction Based on Deep Learning Approach" Applied Sciences 11, no. 1: 254. https://doi.org/10.3390/app11010254
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