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Abstract #4453

MR-based body composition analysis, resting state fMRI and autonomic function evaluation for phenotyping biomarkers

CHETNA BANGA1, DR. PREETI BHOSLE1, DR. DUSHANT KUMAR1, PROF. K.K DEEPAK2, DR. DINU CHANDRAN3, and PROF. RAMA JAYASUNDAR4
1NUCLEAR MAGNETIC RESONANCE, ALL INDIA INSTITUTE OF MEDICAL SCIENCES, NEW DELHI, NEW DELHI, IN, India, 2PHYSIOLOGY, ALL INDIA INSTITUTE OF MEDICAL SCIENCES, NEW DELHI, NEW DELHI, India, 3PHYSIOLOGY, ALL INDIA INSTITUTE OF MEDICAL SCIENCES, NEW DELHI, NEW DELHI, IN, India, 4NUCLEAR MAGNETIC RESONANCE, ALL INDIA INSTITUTE OF MEDICAL SCIENCES, NEW DELHI, NEW DELHI, India

Synopsis

Keywords: Screening, Quantitative Imaging, MR body composition analysis, phenotyping, subcutaneous fat, resting state fMRIPhenotyping individuals are gaining importance in personalized medicine. This MR based body composition analysis and resting state (R-fMRI) along with autonomic functions (AFT) evaluation have determined parameters for physical, functional and physiological phenotyping in healthy volunteers (n=30). MR studies (at 3T) were R-fMRI using EPI sequence, subcutaneous fat evaluation by mDIXON sequence and AFT included parasympathetic (deep breathing, HUT) and sympathetic (HUT, hand grip test, cold pressor test). Increased functional activation, higher abdominal fat and fall in Baroreflex independent sympathetic reactivity were observed in volunteers having BMI ≥25 Kg/m2 compared to those with BMI <25Kg/m2.

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Keywords