Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Inverse planning for intensity-modulated arc therapy using direct aperture optimization.

M A Earl1, D M Shepard, S Naqvi

  • 1Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD 21201, USA. mearl001@umaryland.edu

Physics in Medicine and Biology
|May 14, 2003
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Precise Measurement of the Chromoelectric Dipole Moment of the Charm Quark.

Physical review letters·2026
Same author

Precise Measurement of Matter-Antimatter Asymmetry with Entangled Hyperon-Antihyperon Pairs.

Physical review letters·2026
Same author

Observation of Λ[over ¯]p→K^{+}π^{+}π^{-}π^{0} and Λ[over ¯]p→K^{+}π^{+}π^{-}2π^{0}.

Physical review letters·2026
Same author

First Measurement of the D_{s}^{+}→K^{0}μ^{+}ν_{μ} Decay.

Physical review letters·2026
Same author

Observation of the Electromagnetic Radiative Decays of the Λ(1520) and Λ(1690) to γΣ^{0}.

Physical review letters·2026
Same author

Observation of a Threshold Enhancement in the π^{+}π^{-} Spectrum in ψ(3686)→π^{+}π^{-}J/ψ Decays.

Physical review letters·2026

Direct aperture optimization (DAO) is a new algorithm for intensity-modulated arc therapy (IMAT) treatment planning. DAO enables efficient IMAT plan generation by optimizing aperture shapes and weights, overcoming previous limitations.

Area of Science:

  • Radiation Oncology
  • Medical Physics
  • Computational Biology

Background:

  • Intensity-modulated arc therapy (IMAT) offers advantages of rotational IMRT using conventional linear accelerators.
  • The full potential of IMAT has been limited by the absence of automated, efficient treatment planning tools.

Purpose of the Study:

  • To introduce and evaluate a novel inverse treatment planning algorithm, Direct Aperture Optimization (DAO), for Intensity-Modulated Arc Therapy (IMAT).
  • To demonstrate the capability of DAO in generating efficient IMAT plans by optimizing aperture shapes and weights directly.

Main Methods:

  • Developed DAO, an inverse planning algorithm that optimizes multi-leaf collimator (MLC) aperture positions and weights simultaneously.
  • DAO enforces delivery constraints during optimization, eliminating the need for a separate leaf-sequencing step.

Related Experiment Videos

  • Applied DAO to generate IMAT plans for a cylindrical phantom, a head and neck cancer patient, and a prostate cancer patient.

    • Main Results:

    • DAO successfully generated inverse treatment plans for IMAT.
    • The algorithm directly optimized aperture parameters, integrating planning and delivery constraint enforcement.
    • Demonstrated feasibility across different clinical scenarios, including phantom and patient cases.

    Conclusions:

    • Direct Aperture Optimization (DAO) is a feasible and effective algorithm for automated IMAT treatment planning.
    • DAO overcomes previous limitations by directly optimizing aperture shapes and weights, enabling efficient IMAT delivery.
    • This approach facilitates the broader clinical adoption of IMAT by providing robust planning capabilities.