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Robotic Radiosurgery with Beams of Adaptable Shapes

  • Achim Schweikard
  • Rhea Tombropoulos
  • John R. Adler
Part of the Lecture Notes in Computer Science book series (LNCS, volume 905)

Abstract

In radiosurgery, a moving beam of radiation acts as an ablative surgical instrument. Conventional systems for radiosurgery use a cylindrical radiation beam of fixed cross-section. The radiation source can only be moved along simple standardized paths. A new radiosurgical system based on a six degree-of-freedom robotic arm has been developed to overcome limitations of conventional systems. We address the following question: Can dose distributions generated by robotic radiosurgery be improved by using non-cylindrical radiation beams of adaptable cross-section? Geometric methods for planning the shape of the beam in addition to planning beam motion are developed. Design criteria considered in this context are: treatment time, radiation penumbra as well as transparency of interactive treatment planning. An experimental evaluation compares distributions generated with our new radiosurgical system using cylindrical beams to distributions generated with beams of adaptable shapes.

Keywords

Dose Distribution Planar Field Rectangular Beam Penumbral Region Sweeping Direction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • Achim Schweikard
    • 1
    • 2
  • Rhea Tombropoulos
    • 1
  • John R. Adler
    • 2
  1. 1.Robotics Laboratory, Department of Computer ScienceStanford UniversityStanfordUSA
  2. 2.Department of NeurosurgeryStanford UniversityStanfordUSA

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