An automatic entropy method to efficiently mask histology whole-slide images
Song, Y.; Cisternino, F.; Mekke, J. M.; de Borst, G. J.; de Kleijn, D. P. V.; Pasterkamp, G.; Vink, A.; Glastonbury, C. A.; van der Laan, S. W.; Miller, C. L.
Show abstract
BackgroundTissue segmentation of histology whole-slide images (WSI) remains a critical task in automated digital pathology workflows for both accurate disease diagnosis and deep phenotyping for research purposes. This is especially challenging when the tissue structure of biospecimens is relatively porous and heterogeneous, such as for atherosclerotic plaques. MethodsIn this study, we developed a unique approach called EntropyMasker based on image entropy to tackle the fore- and background segmentation (masking) task in histology WSI. We evaluated our method on 97 high-resolution WSI of human carotid atherosclerotic plaques in the Athero-Express Biobank Study, constituting hematoxylin and eosin (H&E) and 8 other staining types. Results and ConclusionUsing multiple benchmarking metrics, we compared our method with four widely used segmentation methods: Otsus method, Adaptive mean, Adaptive Gaussian and slideMask and observed that our method had the highest sensitivity and Jaccard similarity index. We envision EntropyMasker to fill an important gap in WSI preprocessing and deep learning image analysis pipelines and enable disease phenotyping beyond the field of atherosclerosis.
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