Proceedings of the Korean Society of Medical Physics Conference (한국의학물리학회:학술대회논문집)

Korean Society of Medical Physics (한국의학물리학회)
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Comparison of Target Approximation Techniques for Stereotactic Radiosurgical Plan

  • Choi, Kyoung-Sik (Department of Biomedical Engineering, College of Medicine, The Catholic University of Korea) ;
  • Oh, Seong-Jong (Department of Biomedical Engineering, College of Medicine, The Catholic University of Korea) ;
  • Lee, Jeong-Woo (Department of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Department of Radiation Oncology, Konkuk University Hospital) ;
  • Choe, Bo-Young (Department of Biomedical Engineering, College of Medicine, The Catholic University of Korea) ;
  • Kim, Moon-Chan (Department of Neurosurgery, Kangnam St. Mary’s Hospital) ;
  • Chung, Hyun-Tai (Department of Neurosurgery, Seoul National University Hospital) ;
  • Suh, Tae-Su (Department of Biomedical Engineering, College of Medicine, The Catholic University of Korea)
  • Published : 2005.04.15
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Abstract

The aim of radiosurgery cures a patient to deliver the lower dose at the normal organ and the higher dose at the tumor. Therefore accuracy of the dose is required to gain effect of radiosurgery in surgical planning. In this paper, we developed the methods of target approximation for a fast treatment planning. Nominally, the stereotactic radiosurgery(SRS) using Linac and Gamma knife produces spherical dose distribution through circular collimators using multiple arcs and 201 holes on semi-spherical helmet by $^{60}Co$. We developed an automatic radiosurgical plan about spherical packing arrangement. To automatically plan the SRS, new planning methods based on cylinder and cube structure for target shaping was developed. This approach using heuristic and stochastic algorithm is a useful radiosurgical plan without restrictions in the various tumor shapes and the different modalities.

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