Physics Contribution Megavoltage Image-based Dynamic Multileaf Collimator Tracking Ofa Niti Stent in Porcine Lungs on a Linear Accelerator

*Department of Oncology, Aarhus University Hospital, Aarhus, Denmark; yDepartment of Medical Physics, Aalborg Hospital, University of Aarhus, Aalborg, Denmark; zDepartment of Pulmonary Medicine, Aalborg Hospital, University of Aarhus, Aalborg, Denmark; xDepartment of Thoracic Surgery, Aalborg Hospital, University of Aarhus, Aalborg, Denmark; kDepartment of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; {University of Texas Southwestern Medical Center, Dallas, TX; Department of Radiation Oncology, University of California–Los Angeles, Los Angeles, CA; **Department of Radiation Oncology, Stanford University, Stanford, CA; and yySydney Medical School, University of Sydney, Sydney, New South Wales, Australia