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Proceedings Paper

Histographs: graphs in histopathology
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Paper Abstract

Spatial arrangement of cells of various types, such as tumor infiltrating lymphocytes and the advancing edge of a tumor, are important features for detecting and characterizing cancers. However, convolutional neural networks (CNNs) do not explicitly extract intricate features of the spatial arrangements of the cells from histopathology images. In this work, we propose to classify cancers using graph convolutional networks (GCNs) by modeling a tissue section as a multi-attributed multi-relational spatial graph of its constituent cells. Cells are detected using their nuclei in H and E stained tissue image, and each cell’s appearance is captured as a multi-attributed high-dimensional vertex feature. The spatial relations between neighboring cells are captured as edge features based on their distances in a multi-relational graph. We demonstrate the utility of this approach by obtaining classification accuracy that is competitive with CNNs, specifically, Inception-v3, on two tasks – cancerous versus non-cancerous and in situ versus invasive – on the BACH breast cancer dataset.

Paper Details

Date Published: 16 March 2020
PDF: 6 pages
Proc. SPIE 11320, Medical Imaging 2020: Digital Pathology, 113200O (16 March 2020); doi: 10.1117/12.2550114
Show Author Affiliations
Deepak Anand, Indian Institute of Technology Bombay (India)
Shrey Gadiya, Indian Institute of Technology Bombay (India)
Amit Sethi, Indian Institute of Technology Bombay (India)

Published in SPIE Proceedings Vol. 11320:
Medical Imaging 2020: Digital Pathology
John E. Tomaszewski; Aaron D. Ward, Editor(s)

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