Multi-Scale Input Strategies for Medulloblastoma Tumor Classification using Deep Transfer Learning

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Abstract: Medulloblastoma (MB) is a primary central nervous system tumor and the most common malignant brain cancer among children. Neuropathologists perform microscopic inspection of histopathological tissue slides under a microscope to assess the severity of the tumor. This is a timeconsuming task and often infused with observer variability. Recently, pre-trained convolutional neural networks (CNN) have shown promising results for MB subtype classification. Typically, high-resolution images are divided into smaller tiles for classification, while the size of the tiles has not been systematically evaluated. We study the impact of tile size and input strategy and classify the two major histopathological subtypes-Classic and Desmoplastic/Nodular. To this end, we use recently proposed EfficientNets and evaluate tiles with increasing size combined with various downsampling scales. Our results demonstrate using large input tiles pixels followed by intermediate downsampling and patch cropping significantly improves MB classification performance. Our top-performing method achieves the AUC-ROC value of 90.90% compared to 84.53% using the previous approach with smaller input tiles.

Location: Deutsche Nationalbibliothek Frankfurt am Main

Extent: Online-Ressource

Language: Englisch

Bibliographic citation: Multi-Scale Input Strategies for Medulloblastoma Tumor Classification using Deep Transfer Learning ; volume:7 ; number:1 ; year:2021 ; pages:63-66 ; extent:4
Current directions in biomedical engineering ; 7, Heft 1 (2021), 63-66 (gesamt 4)

Creator: Bengs, M.
Pant, S.
Bockmayr, M.
Schüller, U.
Schlaefer, Alexander

DOI: 10.1515/cdbme-2021-1014

URN: urn:nbn:de:101:1-2410141722167.862474916819

Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.

Last update: 15.08.2025, 7:27 AM CEST

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Bengs, M.
Pant, S.
Bockmayr, M.
Schüller, U.
Schlaefer, Alexander

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