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Abstract #0241

Multicenter reproducibility of hand-crafted radiomics and deep-learning based features for biparametric prostate MRI

Harri Merisaari1, Janne Verho2, Ileana Montoya Perez2,3, Otto Ettala4, Kari T Syvänen4, Pekka Taimen5, Aida Steiner2, Jani Saunavaara6, Ekaterina Saukko2, Peter Boström4, Hannu Aronen1, and Ivan Jambor1,2
1Department of Radiology, University of Turku, Raisio, Finland, 2Department of Radiology, Turku University Hospital, Turku, Finland, 3Department of Computing, University of Turku, Turku, Finland, 4Department of Urology, TYKS Turku University Hospital and University of Turku, Turku, Finland, 5Department of Pathology, TYKS Turku University Hospital, Turku, Finland, 6Department of Medical Physics, TYKS Turku University Hospital, Turku, Finland

Synopsis

Keywords: Radiomics, Cancer, Inter-site reproducibility, Deep Learning, bi-parametric MRIIn the current study, we aimed to explore reproducibility of various hand-crafted radiomics features, and deep learning autoencoder-based features within Gleason Grade Groups (GGG) using MULTI-IMPROD trial data. Differences between sites were evaluated with ANOVA test, corrected for GGG group, and multi-class AUC for GGG. We explored if systematic differences exist between the four centers taking part in the trial with conventionally used radiomic features. The results show differences between modalities, feature groups, and when intensity harmonization is applied for ADC.

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Keywords