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Abstract #3094

Differentiation of IDH-mutant Glioma Subtypes Using Unsupervised Dimensionality Reduction of MRI Biomarkers

Klara Willms1,2, Tal Zeevi1,3, Saahil Chadha1, Marc von Reppert1,2, Jan Lost1, Niklas Tillmanns1, Sara Merkaj1, Anita Huttner4, Sanjay Aneja5, and Mariam Aboian1
1Radiology, Yale School of Medicine, New Haven, CT, United States, 2Radiology, University of Leipzig, Leipzig, Germany, 3Biomedical Engineering, Yale University, New Haven, CT, United States, 4Pathology, Yale School of Medicine, New Haven, CT, United States, 5Therapeutic Radiology, Yale School of Medicine, New Haven, CT, United States

Synopsis

Keywords: Radiomics, Brain, Diagnosis/Prediction, Data Analysis

Motivation: Radiomic features can potentially help distinguish subtypes of IDH-mutant gliomas that appear similar on MRI.

Goal(s): The aim of this study was to evaluate whether imaging-based clustering of radiomic biomarkers of IDH-mutant gliomas may identify patterns or subgroups based on the 2021 CNS WHO classification.

Approach: Dimensionality reduction techniques were applied to radiomic features of 179 patients of different sequence combinations to analyze the high dimensional feature space.

Results: FLAIR and T1 post-contrast imaging revealed unique clusters, and survival analysis suggested potential differences amongst clusters. However, further research with a larger dataset is needed to determine whether the observed differences are significant.

Impact: This study analyzed quantitative imaging biomarkers to differentiate IDH-mutant gliomas according to the 2021 WHO classification. The findings suggest that radiomic features may hold insights into potential survival differences among subtypes. Larger-scale research is required to further investigate these findings.

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Keywords