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Shankar Vangipuram Author
Subjects of specialization
Affiliation
Interventional Radiology, Diagnosis, Subspecialties of Radiology, Medical Imaging Modalities, Radiobiology
Department of Radiology National University of Athens, Greece
Biography
Dr. Vassilis Kouloulias is Associate Professor of Radiation Oncology in University of Athens, Greece. Dr. Vassilis Kouloulias has studied at many universities and holds multiple degrees including a Masters of Physics from the University of Athens and PhD’s in Electrical Computer Engineering from the National Technical University of Athens.
Publications
Short Communication Open Access
Focus where it matters, optimizing 4D and 5D imaging tools for extracranial radiosurgery- Shankar Vangipuram- HCG Cancer Center
Author(s): Shankar Vangipuram
Introduction: Extracranial radiosurgery involves shooting surgical doses of radiation for the management of moving targets cancer/oligomets and is characterized by accurate target delineation, robust motion management and fast dose delivery (3-8 fractions). Method: Basic 3D medical imaging acquisition and reconstruction principles are based on the assumption that the object being imaged is static over the course of the acquisition. Patient motion and organ distortion, whether the result of voluntary patient movement or natural functions such as respiration, can impact target design due to artifacts and thus delivered doses will be less accurate and precise. Instead, a common strategy employed was to expand the target volume by a safety margin to accommodate the estimated motion of the t... view more»
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