iScience (Jan 2023)

Vision transformer-based weakly supervised histopathological image analysis of primary brain tumors

  • Zhongxiao Li,
  • Yuwei Cong,
  • Xin Chen,
  • Jiping Qi,
  • Jingxian Sun,
  • Tao Yan,
  • He Yang,
  • Junsi Liu,
  • Enzhou Lu,
  • Lixiang Wang,
  • Jiafeng Li,
  • Hong Hu,
  • Cheng Zhang,
  • Quan Yang,
  • Jiawei Yao,
  • Penglei Yao,
  • Qiuyi Jiang,
  • Wenwu Liu,
  • Jiangning Song,
  • Lawrence Carin,
  • Yupeng Chen,
  • Shiguang Zhao,
  • Xin Gao

Journal volume & issue
Vol. 26, no. 1
p. 105872

Abstract

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Summary: Diagnosis of primary brain tumors relies heavily on histopathology. Although various computational pathology methods have been developed for automated diagnosis of primary brain tumors, they usually require neuropathologists’ annotation of region of interests or selection of image patches on whole-slide images (WSI). We developed an end-to-end Vision Transformer (ViT) – based deep learning architecture for brain tumor WSI analysis, yielding a highly interpretable deep-learning model, ViT-WSI. Based on the principle of weakly supervised machine learning, ViT-WSI accomplishes the task of major primary brain tumor type and subtype classification. Using a systematic gradient-based attribution analysis procedure, ViT-WSI can discover diagnostic histopathological features for primary brain tumors. Furthermore, we demonstrated that ViT-WSI has high predictive power of inferring the status of three diagnostic glioma molecular markers, IDH1 mutation, p53 mutation, and MGMT methylation, directly from H&E-stained histopathological images, with patient level AUC scores of 0.960, 0.874, and 0.845, respectively.

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