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

A method for implementing dynamic photon beam intensity modulation using independent jaws and a multileaf collimator

C X Yu1, M J Symons, M N Du

  • 1William Beaumont Hospital, Royal Oak, MI 48073, USA.

Physics in Medicine and Biology
|May 1, 1995
PubMed
Summary

A new mathematical model enables precise photon intensity control in linear accelerators by synchronizing collimator movement and dose rate. This innovation allows for efficient delivery of complex radiation therapy treatments.

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

Test of CP Symmetry in the Neutral Decays of Λ via J/ψ→ΛΛ[over ¯].

Physical review letters·2026
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

Area of Science:

  • Medical Physics
  • Radiation Oncology
  • Accelerator Technology

Background:

  • Delivering precise photon intensity distributions is crucial for conformal radiation therapy.
  • Existing methods for intensity modulation in linear accelerators have limitations in speed and flexibility.

Purpose of the Study:

  • To develop a mathematical model for digitally controlled linear accelerators to achieve desired photon intensity distributions.
  • To enable precise control over collimator motion and machine dose rate variations.

Main Methods:

  • Derived a mathematical model relating machine dose rate, collimator speed, and photon fluence gradient.
  • Applied the model to independently controlled collimator jaws and multileaf collimators.
  • Implemented a 'dynamic stepping' scheme for 2D intensity modulation.

Related Experiment Videos

Main Results:

  • The model demonstrates that the quotient of dose rate and collimator speed is proportional to the fluence gradient.
  • Successfully implemented 1D wedged isodose distributions and 2D intensity modulation.
  • Automated delivery scheme achieved beam delivery times comparable to conventional methods.

Conclusions:

  • The developed model offers a versatile, simple, and efficient approach for intensity-modulated radiation therapy.
  • This method is practical for delivering conformal therapy treatments with improved precision.
  • The model accommodates various linear accelerator designs and collimator types.