Medical Physics

Ashley Rubinstein, PhD

Director, RAD-AID Medical Physics

Ashley Rubinstein is a diagnostic and nuclear medical physics resident at the UTHealth McGovern Medical School in Houston, TX. She is a member of the UTHealth chapter of RAD-AID, through which she has worked to improve quality assurance practices and radiation safety in Morocco. With support from the IAEA, she also collaborates with radiation oncology physicists in Puebla, Mexico to develop imaging quality assurance programs at various clinics throughout the region. She envisions medical physicists playing a vital role in the work of RAD-AID by providing the expertise needed to ensure high quality images, the safety of patients, and the safety of medical personnel in low-resource regions. For more information about RAD-AID Medical Physics, please contact Ashley at

Joe Weygand, PhD

Program Manager, RAD-AID Medical Physics

Dr. Joe Weygand is a therapeutic medical physicist with a long-standing interest in global health. He completed a B.A. in physics at Columbia University, an M.S. in medical physics at the University of Texas MD Anderson Cancer Center, and a Ph.D. in physics at Heidelberg University in Germany. He has spent time volunteering in radiation oncology hospitals in Tanzania, Senegal, Uganda, and Ghana. He is passionate about increasing global access to radiation oncology through didactic education, clinical training, the clinical implementation of new technology, and studying the historical, political, and economic determinants of global health.

Patricia Svolos, PhD

Program Manager, RAD-AID Medical Physics, Diagnostic Imaging

Patricia Svolos is a diagnostic medical physicist at the UTHealth McGovern Medical School in Houston,
TX. She completed a B.Sc. in physics at the University of Patras, Greece and a Ph.D. in medical physics at
the University of Thessaly, Greece. She is very passionate about promoting global health through the
application of safe practices in radiology and implementation of image quality assurance programs. Her
focus is on didactic education and formulation of medical physics training curriculum for radiology