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 Concept Videos

Transmission Electron Microscopy01:15

Transmission Electron Microscopy

6.8K
In 1931, physicist Ernst Ruska—building on the idea that magnetic fields can direct an electron beam just as lenses can direct a beam of light in an optical microscope—developed the first prototype of the electron microscope. This development led to the development of the field of electron microscopy. In the transmission electron microscope (TEM), electrons are produced by a hot tungsten element and accelerated by a potential difference in an electron gun, which gives them up to 400...
6.8K

You might also read

Related Articles

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

Sort by
Same author

Power-law Beta Calculations for Realistic Mammography Images from Egs_cbct Simulation.

Journal of medical physics·2026
Same author

Development and Validation of a Monte Carlo Beam Model for 6, 8, and 15 MV Clinical Photon Beams on the Elekta™ Precise Linac.

Journal of medical physics·2026
Same author

Electron dose optimisation based on tumour thickness and shape for photon multi-leaf collimated megavoltage electrons.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2025
Same author

Out-of-field scattering from the Integral Quality Monitor® in megavolt photon beams.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2020
Same author

Dose Shadowing and Prosthesis Involvement for Megavoltage Photon <i>In vivo</i> Diode Dosimetry.

Journal of medical physics·2020
Same author

Set-up error validation with EPID images: Measurements vs Egs_cbct simulation.

Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology·2019

Related Experiment Video

Updated: Jan 19, 2026

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
08:34

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies

Published on: February 6, 2019

20.9K

Improved Monte Carlo clinical electron beam modelling.

K N Sachse1, F C P du Plessis1

  • 1Department of Medical Physics, Faculty of Health Sciences, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa.

Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)
|September 25, 2019
PubMed
Summary
This summary is machine-generated.

A validated EGSnrc electron model for the Elekta Synergy linear accelerator accurately predicts dose distributions. The model uses an asymmetrical electron energy spectrum and determined focal spot parameters for improved accuracy in build-up regions.

Keywords:
BEAMnrcDOSXYZnrcEGSnrcElectron modellingEnergy spectrumFocal spotMonte Carlo

More Related Videos

Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform
07:57

Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform

Published on: March 24, 2022

3.1K
Irradiator Commissioning and Dosimetry for Assessment of LQ &#945; and &#946; Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
06:20

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition

Published on: March 11, 2021

7.7K

Related Experiment Videos

Last Updated: Jan 19, 2026

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
08:34

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies

Published on: February 6, 2019

20.9K
Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform
07:57

Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform

Published on: March 24, 2022

3.1K
Irradiator Commissioning and Dosimetry for Assessment of LQ &#945; and &#946; Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
06:20

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition

Published on: March 11, 2021

7.7K

Area of Science:

  • Medical Physics
  • Radiation Oncology
  • Computational Dosimetry

Background:

  • Accurate dose calculation is crucial for radiation therapy planning.
  • Electron beam modeling requires precise characterization of accelerator parameters.
  • Validation against measured data is essential for reliable treatment planning systems.

Purpose of the Study:

  • To develop and validate an EGSnrc-based electron model for an Elekta Synergy linear accelerator.
  • To achieve accurate prediction of central axis percentage depth dose (PDD) curves, off-axis profiles (OAPs), and relative output factors (ROFs).
  • To investigate the impact of electron beam focal spot size and energy spectrum on dose distribution accuracy.

Main Methods:

  • Utilized BEAMnrc component modules to model the linear accelerator based on vendor specifications.
  • Determined electron beam focal spot size and input energy spectrum by benchmarking against water tank measurements.
  • Employed phase space files as source input for DOSXYZnrc simulations in a water phantom.
  • Calculated dose distributions for various electron energies, field sizes, and source-to-surface distances.

Main Results:

  • The electron model reproduced measured central axis PDDs and OAPs within 2%/2 mm and ROFs within 3%.
  • The focal spot full width at half maximum was determined to be 1.50 mm.
  • An asymmetrical input electron energy spectrum with a low-energy tail significantly improved agreement with measured data, particularly in the build-up region.

Conclusions:

  • The validated EGSnrc electron model accurately predicts dose distributions within 2%/2 mm of measured data.
  • The asymmetrical energy spectrum proved to be a critical parameter for fine-tuning and improving dose distribution accuracy in the build-up region.
  • Iterative simulations enabled the determination of focal spot parameters, enhancing model reliability.