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Abstract #4984

Subject-specific multi-echo fMRI derived seed-based connectivity as a biomarker for mild traumatic brain injury

Chitresh Bhushan1, Radhika Madhavan2, Amod Jog3, Nastaren Abad1, Brice Fernandez4, Luca Marinelli1, H. Doug Morris5, Maureen Hood5,6, J Kevin DeMarco6, Robert Y Shih5,6, Gail Kohls6, Kimbra Kenney5,6, Vincent B Ho5,6, and Thomas K Foo1,5
1GE Research, Niskayuna, NY, United States, 2GE Healthcare, Niskayuna, NY, United States, 3GE Research, Bangalore, India, 4GE Healthcare, Versailles, France, 5Uniformed Services University of the Health Sciences, Bethesda, MD, United States, 6Walter Reed National Military Medical Center, Bethesda, MD, United States

Synopsis

Mild traumatic injury (mTBI) patients exhibit acute symptoms including headaches and memory problems that sometimes persist for months, though CT/MRI scans appear normal. The purpose of this study was to identify functional biomarkers of mTBI during the 3-months following injury using seed-based functional connectivity derived from multi-echo resting state functional MRI. In this work, we use multi-band multi-echo resting state fMRI to estimate seed-based functional connectivity. We propose a novel quantitative analysis methodology of suitable for voxel-wise single-subject assessment of disrupted functional connectivity by using an outlier-analysis approach.

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Keywords