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Radiation Planning Assistant - A Streamlined, Fully Automated Radiotherapy Treatment Planning System
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Automated population-based planning for whole brain radiation therapy.

Eduard Schreibmann1, Tim Fox, Walter Curran

  • 1Emory University School of Medicine. eschre2@emory.edu.

Journal of Applied Clinical Medical Physics
|December 25, 2015
PubMed
Summary

This study introduces an automated method for whole-brain radiation treatment planning, significantly reducing planning time and improving plan quality by using database matching. The automated approach enhances critical structure protection and offers a cost-effective solution for radiation oncology.

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Area of Science:

  • Radiation Oncology
  • Medical Physics
  • Image Processing

Background:

  • Whole-brain radiation therapy (WBRT) planning is time-consuming due to repetitive tasks.
  • Current methods can lead to suboptimal treatment plans, risking underdosing or excessive irradiation of normal tissues.

Purpose of the Study:

  • To develop and validate an automated method for WBRT treatment planning.
  • To improve the efficiency and quality of WBRT planning through automatic segmentation and database matching.

Main Methods:

  • Automatic segmentation of target and critical structures using morphological operations.
  • Validation of segmentation against manual segmentation using Dice coefficient and Hausdorff distance.
  • Treatment plan generation via database searching of similar patient anatomies, ranked by a custom metric, and modification of best-match plans.

Main Results:

  • High accuracy in automated segmentation (e.g., Dice coefficient of 0.97 for the brain).
  • Significant reduction in maximum doses to critical structures like eyes and lenses compared to clinical plans.
  • Automated plan generation time reduced to 3-4 minutes.

Conclusions:

  • Automated database-based matching is a viable alternative to traditional WBRT planning.
  • The proposed method improves treatment plan quality and offers a cost-effective solution.
  • This approach enhances patient safety by better protecting critical normal tissues.