Woodruff School of Mechanical Engineering

Faculty Candidate Seminar


Building the Smart Medical X-ray Imaging Future: A Hardware and Software Integration Approach


Dr. Guohua Cao


Virginia Tech


Tuesday, February 5, 2019 at 11:00:00 AM


MRDC Building, Room 4211


Dr. C.K. Chris Wang


Medical imaging has transformed the healthcare science, and is still undergoing rapid innovations in all of its four components: acquisition, reconstruction, processing, and interpretation of medical images. For X-ray based medical imaging, a central research question is how to create better devices, processes, or technologies that can deliver higher spatial resolution, faster imaging speed, and lower radiation dose. Moreover, in addition to better functional-anatomic imaging, development of imaging capabilities that base imaging contrast not just on morphology but also on chemistry, physical properties, and more generally physiologies are important to the realization of smart medical imaging future. In this talk, I will discuss recent advancements in medical X-ray imaging in new devices, systems, and algorithms, with a focus on hardware and software aspects of image formation in Computed Tomography. I will present our work in novel carbon nanotube X-ray sources, unconventional system designs, and scatter suppression and tomographic reconstruction methods for CT. I will also discuss our ventures into developing material-specific molecular imaging capability using photon-counting CT and X-ray fluorescence CT.


GUOHUA CAO is an Assistant Professor of Biomedical Engineering in the Department of Biomedical Engineering and Mechanics at Virginia Tech in Blacksburg, Virginia. He received his PhD in Physical Chemistry from Brown University in 2005. After postdoctoral trainings at Brown University and UNC-Chapel Hill from 2005 to 2008, he became a Research Assistant Professor in the Department of Physics and Astronomy at UNC-Chapel Hill from 2009 to 2011. Dr. Cao has published 1 book chapter, 45 journal papers, 28 conference papers, and 21 meeting abstracts. He has been recognized by a number of awards including NSF CAREER award in 2014. Dr. Cao’s research is directed at biomedical imaging, with a focus on developing novel X-ray based imaging hardware and software for image acquisition and formation.


Refreshments will be served.