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Abstract #5197

Glioma Classifications with 7T MR Spectroscopic Imaging

Sukrit Sharma1, Cornelius Cadrien2, Philipp Lazen1, Hangel Gilbert1, Roxane Licandro3, Wolfgang Bogner1, and Georg Widhalm2
1High-field MR Center, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria, Medical University of Vienna, Vienna, Austria, 2Medical University of Vienna, Vienna, Austria, 3Department of Biomedical Imaging and Image-guided Therapy, Computational Imaging Research Lab (CIR) and Laboratory for Computational Neuroimaging, A.A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital / Harvard Medical School, Charlestown, MA, US., Medical University of Vienna, Vienna, Austria

Synopsis

Keywords: Machine Learning/Artificial Intelligence, Brain, GliomaTo contribute to better tumour classification and thus enhancing patient outcomes, we statistically analysed metabolic maps of 37 glioma patients obtained using high resolution 7T MRSI. We tested and optimised different semi-supervised learning based classification approaches. Random forest classification of IDH mutation status and tumour grade in clinical imaging based segmented tumour regions yielded high diagnostic accuracy with AUC of 86% and 99% respectively. We found Glu, Gln, GSH, tCho, Ins, Gly and tCr as important determining features. These are similar to comparable SVS studies while providing the advantage of whole-brain coverage.

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