Dr. Weitao Li obtained his B.S. (2001) and Ph. D. (2008) degrees from Nanjing University of Aeronautics and Astronautics in China. After graduation, he worked as an Associate Professor in Department of Biomedical Engineering of the same school. In 2012, he joined Dr. Shawn Chen in the National Institute of Biomedical Imaging and Bioengineering (NIBIB) as a visiting scholar. His research is mainly focused on Photoacoustic Microscopy (PAM) of tumor response to Photodynamic Therapy (PDT).