Sergio Fantini is Professor of Biomedical Engineering at Tufts University. His research interests in biomedical optics are in the area of diffuse spectroscopy and imaging of biological tissue. He has contributed to the development of quantitative frequency-domain methods for absolute tissue oximetry, spectral imaging approaches to optical mammography, and the assessment of cerebral hemodynamics in the human brain. He has co-authored about 200 scientific publications and is an inventor on ten patents.