Dr. Sechopoulos is the chair of the AXTI lab within the Department of Radiology and Nuclear Medicine of Radboud University Medical Center, and scientific advisor of the Dutch Expert Center for Screening ( LRCB ). He obtained his Ph.D. from the Georgia Institute of Technology , in Atlanta, USA, performing research in the area of digital breast tomosynthesis at Emory University . Since then, his main area of research is the development of advanced x-ray-based imaging techniques, especially for breast cancer detection, diagnosis and therapy response monitoring. Dr. Sechopoulos has performed extensive work in radiation dosimetry, x-ray scatter modeling and correction, image acquisition optimization and image reconstruction, processing and analysis algorithm development for various x-ray imaging modalities. He also performs patient trials to assess the clinical performance of these and other novel imaging technologies. Dr. Sechopoulos is a member or chair of 22 different tasks groups and committees of the American Association of Physicists in Medicine ( AAPM ), the European Federation for Organization of Medical Physics ( EFOMP ), the Radiological Society of North America ( RSNA ), and the European Society of Breast Imaging ( EUSOBI ). He is a member of the editorial board of the international journals Medical Physics and Radiology , and associate editor of Physica Medica: European Journal of Medical Physics .