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Related Experiment Video

Updated: Dec 20, 2025

Author Spotlight: Improving Radiation Therapy Access with Radiation Planning Assistant
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Limiting treatment plan complexity by applying a novel commercial tool.

Alessandro Scaggion1, Marco Fusella1, Giancarmelo Agnello1

  • 1Medical Physics Department, Veneto Institute of Oncology IOV-IRCCS, Padova, Italy.

Journal of Applied Clinical Medical Physics
|May 22, 2020
PubMed
Summary

The aperture shape controller (ASC) tool simplifies treatment plans, improving radiation delivery without sacrificing quality. This innovation enhances treatment efficiency for prostate and oropharynx cancers.

Keywords:
MLCaperture shape controllercomplexity metricsplan complexityplan quality metrictreatment planning

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Area of Science:

  • Radiation Oncology
  • Medical Physics

Background:

  • Treatment planning complexity can impact radiation delivery efficiency and accuracy.
  • Optimizing treatment plans is crucial for improving patient outcomes in radiotherapy.

Purpose of the Study:

  • To evaluate a new commercial tool, the aperture shape controller (ASC), for its ability to simplify treatment plans.
  • To assess if the ASC tool can enhance treatment plan deliverability without compromising plan quality.
  • To compare ASC-optimized plans with those optimized for limited monitor units and combined strategies.

Main Methods:

  • Reoptimization of 10 prostate and 10 oropharyngeal treatment plans using the Eclipse TPS ASC tool.
  • Assessment of plan quality using a defined metric.
  • Analysis of 14 complexity metrics to quantify plan simplification.
  • Evaluation of plan deliverability through 3D dosimetric measurements.

Main Results:

  • ASC-optimized plans demonstrated reduced total Monitor Units (MU).
  • Improved gantry rotation consistency and simpler Multi-Leaf Collimator (MLC) shapes were observed.
  • Shorter overall leaf travel distances were achieved with ASC optimization.

Conclusions:

  • The ASC tool effectively reduces unnecessary complexity in radiotherapy treatment plans.
  • This simplification leads to improved plan deliverability.
  • No compromise in overall plan quality was found when using the ASC tool.