Abstract
Molecular breast cancer sub-types derived from core-biopsy are central for individual outcome prediction and treatment decisions. Determining sub-types by non-invasive imaging procedures would benefit early assessment. Furthermore, identifying phenotypic traits of sub-types may inform our understanding of disease processes as we become able to monitor them longitudinally. We propose a model to learn phenotypic appearance concepts of four molecular sub-types of breast cancer. A deep neural network classification model predicts sub-types from multi-modal, multi-parametric imaging data. Intermediate representations of the visual information are clustered, and clusters are scored based on testing with concept activation vectors to assess their contribution to correctly discriminating sub-types. The proposed model can predict sub-types with competitive accuracy from simultaneous \({}^{18}\)F-FDG PET/MRI, and identifies visual traits in the form of shared and discriminating phenotypic concepts associated with the sub-types.
This work was supported by the Vienna Science and Technology Fund (WWTF, LS19-018, LS20-065), the Austrian Research Fund (FWF, P 35189), a CCC Research Grant, and a European Union’s Horizon 2020 research grant (No. 667211).
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Fürböck, C., Perkonigg, M., Helbich, T., Pinker, K., Romeo, V., Langs, G. (2022). Identifying Phenotypic Concepts Discriminating Molecular Breast Cancer Sub-Types. In: Wang, L., Dou, Q., Fletcher, P.T., Speidel, S., Li, S. (eds) Medical Image Computing and Computer Assisted Intervention – MICCAI 2022. MICCAI 2022. Lecture Notes in Computer Science, vol 13437. Springer, Cham. https://doi.org/10.1007/978-3-031-16449-1_27
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