What is jeffrey siewerdsen?

As an AI language model, I do not have access to current or up to date information about individuals unless they are public figures. However, Jeffrey Siewerdsen (PhD) is a professor of Biomedical Engineering and Radiology at Johns Hopkins University. His main research interests include the development of advanced X-ray imaging systems and their integration into clinical workflows and applications for image-guided interventions. He is also the director of the Carnegie Center for Surgical Innovation at Johns Hopkins, which is focused on developing new technologies and methods for minimally invasive interventions.