Ankur Kapoor Johns Hopkins University Department of Computer Science Russell H. Taylor CISST Center for Integrated Surgical Systems and Technology National Institutes of Health NIH Interventional Radiology Ankur Kapoor Johns Hopkins University Department of Computer Science Russell H. Taylor CISST Center for Integrated Surgical Systems and Technology National Institutes of Health NIH Interventional Radiology Ankur Kapoor Johns Hopkins University Department of Computer Science Russell H. Taylor CISST Center for Integrated Surgical Systems and Technology National Institutes of Health NIH Interventional Radiology Ankur Kapoor Johns Hopkins University Department of Computer Science Russell H. Taylor CISST Center for Integrated Surgical Systems and Technology National Institutes of Health NIH Interventional Radiology Ankur Kapoor Johns Hopkins University Department of Computer Science Russell H. Taylor CISST Center for Integrated Surgical Systems and Technology National Institutes of Health NIH Interventional Radiology Ankur Kapoor Johns Hopkins University Department of Computer Science Russell H. Taylor CISST Center for Integrated Surgical Systems and Technology National Institutes of Health NIH Interventional Radiology Ankur Kapoor Johns Hopkins University Department of Computer Science Russell H. Taylor CISST Center for Integrated Surgical Systems and Technology National Institutes of Health NIH Interventional Radiology Ankur Kapoor Johns Hopkins University Department of Computer Science Russell H. Taylor CISST Center for Integrated Surgical Systems and Technology National Institutes of Health NIH Interventional Radiology Ankur Kapoor Johns Hopkins University Department of Computer Science Russell H. Taylor CISST Center for Integrated Surgical Systems and Technology National Institutes of Health NIH Interventional Radiology Ankur Kapoor Johns Hopkins University Department of Computer Science Russell H. Taylor CISST Center for Integrated Surgical Systems and Technology National Institutes of Health NIH Interventional Radiology Ankur Kapoor Johns Hopkins University Department of Computer Science Russell H. Taylor CISST Center for Integrated Surgical Systems and Technology National Institutes of Health NIH Interventional Radiology Ankur Kapoor Johns Hopkins University Department of Computer Science Russell H. Taylor CISST Center for Integrated Surgical Systems and Technology National Institutes of Health NIH Interventional Radiology