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Collision detection and avoidance during treatment planning

J L Humm1, D Pizzuto, E Fleischman

  • 1Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA.

International Journal of Radiation Oncology, Biology, Physics
|December 1, 1995
PubMed
Summary
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This study introduces new software to prevent radiation therapy gantry collisions with patients during treatment planning. The system simulates room setup and analyzes treatment fields to ensure safety and enable complex treatment designs.

Area of Science:

  • Medical Physics
  • Radiation Oncology
  • Computational Imaging

Background:

  • Radiation therapy planning requires careful consideration of equipment movement to avoid patient collisions.
  • Existing methods may have limitations in visualizing and preventing potential gantry collisions during complex treatment field setups.

Purpose of the Study:

  • To develop computer software to assist radiation oncology planners in avoiding gantry collisions with patients or support assemblies.
  • To enhance safety and feasibility assessment during the treatment planning process.

Main Methods:

  • Development of a simulation of the therapy room using a scale model of the treatment machine.
  • Implementation of a graphical interface for visualizing treatment field configurations in a "room's eye view".

Related Experiment Videos

  • Inclusion of an analytical software module to precompute the safety of gantry and turntable positions, mitigating graphical blind spots.

    • Main Results:

    • The software detects potential collisions between the treatment gantry and patient or support assembly.
    • Alerts are provided to the planner upon collision detection, with suggestions for evasive actions like adjusting treatment distance or gantry angle.

    Conclusions:

    • The developed model facilitates the exploration of unconventional, non-coplanar treatment fields.
    • Planners can immediately test the feasibility of novel treatment configurations, improving planning flexibility and safety.