Overview
Dr. Ren's research interests include imaging dose reduction using digital tomosynthesis (DTS), cone-beam CT (CBCT) scatter correction, novel DTS/CBCT/MRI image reconstruction methods using prior information and motion modeling, deformable image registration, image synthesis, image augmentation, 4D imaging, development and application of AI in image guided radiation therapy (IGRT). His clinical expertise focuses on stereotactic radiosurgery (SRS) and stereotactic body radiation therapy (SBRT) of brain, lung and liver cancer patients.
Current Appointments & Affiliations
Adjunct Professor in the Department of Radiation Oncology
·
2021 - Present
Radiation Oncology,
Clinical Science Departments
Recent Publications
Deep residual network-based projection interpolation and post-processing techniques for thoracic patient CBCT reconstruction.
Journal Article Med Phys · July 2025 BACKGROUND: Projection interpolation can be used to reduce streak artifacts caused by sparse sampling in cone-beam computed tomography (CBCT) image reconstruction. Conventional analytical interpolation methods create additional blur and artifacts at locati ... Full text Link to item CiteFinite Element Method-Based Hybrid MRI/CBCT Generation to Improve Liver Stereotactic Body Radiation Therapy Targets Localization Accuracy.
Journal Article IEEE Trans Radiat Plasma Med Sci · March 2025 Cone-beam CT (CBCT) is commonly used in treatment imaging, but its limited soft tissue contrast presents challenges for liver tumor localization. As a result, indirect localization methods relying on the liver's boundary are commonly utilized, which have l ... Full text Link to item CiteAuthor Correction: Identification of CT based radiomic biomarkers for progression free survival in head and neck squamous cell carcinoma.
Journal Article Sci Rep · February 21, 2025 Full text Link to item CiteRecent Grants
Developing a workflow for clinical evaluation of a hybrid virtual-MRI/CBCT system for precision image guidance in radiation therapy
ResearchCo-Principal Investigator · Awarded by Varian Medical Systems, Inc. · 2020 - 2023Hybrid virtual-MRI/CBCT: A new paradigm for image guidance in liver SBRT
ResearchPrincipal Investigator · Awarded by National Institutes of Health · 2019 - 2021A Limited-angle Intra-fractional Verification (LIVE) System for SBRT Treatments
ResearchPrincipal Investigator · Awarded by National Institutes of Health · 2014 - 2020View All Grants
Education, Training & Certifications
Duke University ·
2009
Ph.D.