Dense anatomical annotation of slit-lamp images improves the performance of deep learning for the diagnosis of ophthalmic disorders

Abstract

The development of artificial intelligence algorithms typically demands abundant high-quality data. In medicine, the datasets that are required to train the algorithms are often collected for a single task, such as image-level classification. Here, we report a workflow for the segmentation of anatomical structures and the annotation of pathological features in slit-lamp images, and the use of the workflow to improve the performance of a deep-learning algorithm for diagnosing ophthalmic disorders. We used the workflow to generate 1,772 general classification labels, 13,404 segmented anatomical structures and 8,329 pathological features from 1,772 slit-lamp images. The algorithm that was trained with the image-level classification labels and the anatomical and pathological labels showed better diagnostic performance than the algorithm that was trained with only the image-level classification labels, performed similar to three ophthalmologists across four clinically relevant retrospective scenarios and correctly diagnosed most of the consensus outcomes of 615 clinical reports in prospective datasets for the same four scenarios. The dense anatomical annotation of medical images may improve their use for automated classification and detection tasks.

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Fig. 1: Flowchart of the overall study.
Fig. 2: Examples of the labelled slit-lamp images in scenario 2.
Fig. 3: Schematic of the classification labels of pathological features in scenario 3.
Fig. 4: Flow diagram of the system.
Fig. 5: Comparison between the performances of the DSV and the diagnosis of ophthalmologists, in a retrospective external validation (scenarios 1–4).
Fig. 6: Prospective test of the DSV (scenarios 1–4).

Data availability

The main data supporting the results in this study are available within the paper and its Supplementary Information. The slit-lamp images and patient data used in this study cannot be shared publicly, yet with certain restrictions they may be available from the corresponding authors for research purposes.

Code availability

The source code for the DSV is available at GitHub (http://github.com/Hugo0512/Visionome). The web server for the DSV is available at http://www.Visionometech.com/login/en.

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Acknowledgements

We thank the following clinicians and clinical technicians for participating in data annotation: K. Chen, X. Zhao, D. Wu, T. Yu, X. Li, Y. An, Q. Wu, R. Li, X. Huang, Y. Li, C. Huang, J. Feng, J. Ye, X. Zhang, B. Lin, H. Ma, Y. Chen, X. Cui, H. Bai, T. Feng, X. Liu, J. Lu, Y. Zhou, H. Zhong, Q. Wang, Z. Wang and C. Huang. This study was funded by the National Key R&D Program of China (no. 2018YFC0116500), the Guangdong Science and Technology Innovation Leading Talents (no. 2017TX04R031), the Science and Technology Planning Projects of Guangdong Province (no. 2019B030316012), the Science Foundation of China for Distinguished Young Scholars (no. 81822010), the National Natural Science Foundation of China (nos. 81770967, 81873675 and 81800810), the Science and Technology Planning Projects of Guangdong Province (no. 2018B010109008) and the Fundamental Research Funds of the Innovation and Development Project for Outstanding Graduate Students in Sun Yat-sen University (no. 19ykyjs36). These sponsors and funding organizations had no role in the design or performance of this study.

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Contributions

H.L., W.L., Y.Y. and X.L. contributed to the conceptualization; W.L., Y.Y., E.L., Y.Z., C.C. and K.Z. contributed to the methodology; W.L., Z.L., X.W. and J.L. contributed to the data curation; Y.Y., K.Z., L.H. and L.Z. contributed to the formal analysis; H.L., W.L. and Y.Y. contributed to the preparation of the original draft; and E.L., K.Z., Z.L., X.W., Y.Z., Y.L., X.L., C.C. and D.Y. contributed to the review and editing. All of the authors discussed the results, commented on the manuscript and approved the final manuscript for publication.

Corresponding authors

Correspondence to Yizhi Liu or Xiyang Liu or Haotian Lin.

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The authors declare no competing interests.

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Supplementary information

Supplementary Information

Supplementary methods, figures and tables.

Reporting Summary

Supplementary Dataset 1

Output of the DSV, answers of the ophthalmologists and reference standards for the retrospective external-validation dataset.

Supplementary Dataset 2

Output of the DSV and reference standards for the prospective dataset.

Supplementary Video 1

Demonstration of the Visionome website.

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Li, W., Yang, Y., Zhang, K. et al. Dense anatomical annotation of slit-lamp images improves the performance of deep learning for the diagnosis of ophthalmic disorders. Nat Biomed Eng 4, 767–777 (2020). https://doi.org/10.1038/s41551-020-0577-y

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