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Article Open Access

Artificial classification of cervical squamous lesions in ThinPrep cytologic tests using a deep convolutional neural network

  • Authors:
    • Li Liu
    • Yuanhua Wang
    • Qiang Ma
    • Liwen Tan
    • Yi Wu
    • Jingjing Xiao
  • View Affiliations / Copyright

    Affiliations: Department of Digital Medicine, School of Biomedical Engineering and Medical Imaging, Third Military Medical University (Army Medical University), Chongqing 400038, P.R. China, Department of Pathology, Third Affiliated Hospital, Third Military Medical University (Army Medical University), Chongqing 400042, P.R. China, Department of Medical Engineering, Second Affiliated Hospital, Third Military Medical University (Army Medical University), Chongqing 400037, P.R. China
    Copyright: © Liu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Article Number: 113
    |
    Published online on: August 12, 2020
       https://doi.org/10.3892/ol.2020.11974
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Abstract

The diagnosis of squamous cell carcinoma requires the accurate classification of cervical squamous lesions in the ThinPrep cytologic test (TCT). It primarily relies on a pathologist's interpretation under a microscope. Deep convolutional neural networks (DCNN) have played an increasingly important role in digital pathology. However, they have not been applied to diverse datasets and externally validated. In the present study, a DCNN model based on VGG16 and an ensemble training strategy (ETS) based on 5‑fold cross‑validation was employed to automatically classify normal and abnormal cervical squamous cells from a multi‑center dataset. First, we collected a dataset comprising 82 TCT samples from four hospitals and fine‑tuned our model twice on the dataset with and without the ETS. Then, we compared the classifications obtained from the models with those provided by two skilled pathologists to discriminate the performance of the models in terms of classification accuracy and efficiency. Finally, paired sample t‑tests were used to validate the consistency between the classification provided by the proposed methods and that of the pathologists. The results showed that ETS slightly, though not significantly, improved the classification accuracy compared with that of the pathologists: P0=0.387>0.05 (DCNN without ETS vs. DCNN with ETS), P1=0.771>0.05 (DCNN with ETS vs. pathologist 1), P2=0.489>0.05 (DCNN with ETS vs. pathologist 2). The DCNN model was almost 6‑fold faster than that of the pathologists. The accuracy of our automated scheme was similar to that of the pathologists, but a higher efficiency in the accurate identification of cervical squamous lesions was provided by the scheme. This result allows for wider and more efficient screening and may provide a replacement for pathologists in the future. Future research should address the viability of the practical implementation of such DCNN models in the laboratory setting.
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Copy and paste a formatted citation
Spandidos Publications style
Liu L, Wang Y, Ma Q, Tan L, Wu Y and Xiao J: Artificial classification of cervical squamous lesions in ThinPrep cytologic tests using a deep convolutional neural network. Oncol Lett 20: 113, 2020.
APA
Liu, L., Wang, Y., Ma, Q., Tan, L., Wu, Y., & Xiao, J. (2020). Artificial classification of cervical squamous lesions in ThinPrep cytologic tests using a deep convolutional neural network. Oncology Letters, 20, 113. https://doi.org/10.3892/ol.2020.11974
MLA
Liu, L., Wang, Y., Ma, Q., Tan, L., Wu, Y., Xiao, J."Artificial classification of cervical squamous lesions in ThinPrep cytologic tests using a deep convolutional neural network". Oncology Letters 20.4 (2020): 113.
Chicago
Liu, L., Wang, Y., Ma, Q., Tan, L., Wu, Y., Xiao, J."Artificial classification of cervical squamous lesions in ThinPrep cytologic tests using a deep convolutional neural network". Oncology Letters 20, no. 4 (2020): 113. https://doi.org/10.3892/ol.2020.11974
Copy and paste a formatted citation
x
Spandidos Publications style
Liu L, Wang Y, Ma Q, Tan L, Wu Y and Xiao J: Artificial classification of cervical squamous lesions in ThinPrep cytologic tests using a deep convolutional neural network. Oncol Lett 20: 113, 2020.
APA
Liu, L., Wang, Y., Ma, Q., Tan, L., Wu, Y., & Xiao, J. (2020). Artificial classification of cervical squamous lesions in ThinPrep cytologic tests using a deep convolutional neural network. Oncology Letters, 20, 113. https://doi.org/10.3892/ol.2020.11974
MLA
Liu, L., Wang, Y., Ma, Q., Tan, L., Wu, Y., Xiao, J."Artificial classification of cervical squamous lesions in ThinPrep cytologic tests using a deep convolutional neural network". Oncology Letters 20.4 (2020): 113.
Chicago
Liu, L., Wang, Y., Ma, Q., Tan, L., Wu, Y., Xiao, J."Artificial classification of cervical squamous lesions in ThinPrep cytologic tests using a deep convolutional neural network". Oncology Letters 20, no. 4 (2020): 113. https://doi.org/10.3892/ol.2020.11974
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