Dr.Dong is familiar with radiation dosimetry and use of images in radiation oncology for setup (IGRT) and treatment planning. He was involved in several auto-segmentation projects using deformable image registration or machine learning methods. In addition, Dr.Dong worked extensively in the technical commissioning in three proton therapy centers (Hitachi Synchrotron at MD Anderson Cancer Center in 2005-2008, Varian first ProBeam pencil beam scanning at Scripps Health in 2012-2016, and IBA multi-room cyclotron-based system with upgraded dedicated pencil beam scanning technology since 2017).