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

Verification of a two-dimensional pencil beam arc electron dose calculation algorithm

J A Antolak1, E el-Khatib, J W Scrimger

  • 1Cross Cancer Institute, Edmonton, Alberta, Canada.

Medical Physics
|November 1, 1993
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

The impact of temporal inaccuracies on 4DCT image quality.

Medical physics·2007
Same author

Dual scattering foil design for poly-energetic electron beams.

Physics in medicine and biology·2005
Same author

Dose properties of x-ray beams produced by laser-wakefield-accelerated electrons.

Physics in medicine and biology·2005
Same author

Dose properties of a laser accelerated electron beam and prospects for clinical application.

Medical physics·2004
Same author

Utilization of custom electron bolus in head and neck radiotherapy.

Journal of applied clinical medical physics·2003
Same author

Phase I study of concomitant gemcitabine and IMRT for patients with unresectable adenocarcinoma of the pancreatic head.

International journal of gastrointestinal cancer·2003
Same journal

Correction to "On the shape of the radiation survival curve in tumor spheroids: The role of oxygen heterogeneity".

Medical physics·2026
Same journal

Multi-view constrained semi-supervised vertebra detection for 3D ultrasound spine volume.

Medical physics·2026
Same journal

Accuracy of quantitative <sup>177</sup>Lu SPECT/CT imaging: A systematic review.

Medical physics·2026
Same journal

Physics-constrained dual-domain network for CBCT reconstruction from orthogonal X-rays in gynecologic radiotherapy.

Medical physics·2026
Same journal

Decomposition-based harmonization for quantitative PET imaging across scanners and radiotracers.

Medical physics·2026
Same journal

Development and evaluation of an in vivo dose-based monitoring system for electron FLASH radiation therapy.

Medical physics·2026
See all related articles

A new pencil beam algorithm improves electron beam dosimetry for modern linear accelerators. While accurate for homogeneous materials, it overestimates treatment depth and shows discrepancies in lung phantoms.

Area of Science:

  • Medical Physics
  • Radiation Oncology
  • Radiotherapy Physics

Background:

  • Modern linear accelerators offer advanced capabilities, increasing the importance of accurate dosimetry for arced electron beams.
  • Electron beam dosimetry is critical for precise radiation therapy delivery.
  • Developing robust algorithms for complex beam geometries is an ongoing challenge in radiotherapy.

Purpose of the Study:

  • To develop and evaluate a practical pencil beam algorithm for arced electron beams.
  • To assess the algorithm's accuracy in dose prediction, including heterogeneity corrections using computed tomography (CT) data.
  • To identify areas for improvement in electron beam dose calculation accuracy.

Main Methods:

  • Development of a practical pencil beam algorithm tailored for arced electron beams.

Related Experiment Videos

  • Integration of computed tomography (CT) information for heterogeneity corrections.
  • Validation against homogeneous phantoms and a heterogeneous lung phantom.

    • Main Results:

    • The algorithm accurately predicts maximum dose and bremsstrahlung components within 1% for homogeneous phantoms.
    • A consistent overestimation of the depth of maximum dose (treatment depth) by up to 0.7 cm was observed.
    • Discrepancies of up to 30% were noted in a heterogeneous lung phantom, though comparable to conventional algorithms.

    Conclusions:

    • The developed pencil beam algorithm shows promise for arced electron beam dosimetry, particularly in homogeneous media.
    • Further enhancements are needed, focusing on precise calculation of pencil beam widths and incorporating range straggling.
    • Improvements in these areas could enhance the clinical applicability of the algorithm for complex radiotherapy treatments.