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

IMRT verification with a camera-based electronic portal imaging system.

M Partridge1, J R Symonds-Tayler, P M Evans

  • 1Joint Department of Physics, Institute of Cancer Research/Royal Marsden NHS Trust, Sutton, UK. m.partridge@physics.org

Physics in Medicine and Biology
|December 29, 2000
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

AAPS Perspective on the EURL Recommendation on the use of Non-Animal-Derived Antibodies.

The AAPS journal·2021
Same author

An end-to-end assessment on the accuracy of adaptive radiotherapy in an MR-linac.

Physics in medicine and biology·2021
Same author

The stability of imaging biomarkers in radiomics: a framework for evaluation.

Physics in medicine and biology·2019
Same author

Stomach Dose-Volume Predicts Acute Gastrointestinal Toxicity in Chemoradiotherapy for Locally Advanced Pancreatic Cancer.

Clinical oncology (Royal College of Radiologists (Great Britain))·2018
Same author

The Use of Social Media to Combat Research-Isolation.

Annals of the Entomological Society of America·2018
Same author

CMOS Active Pixel Sensors as energy-range detectors for proton Computed Tomography.

Journal of instrumentation : an IOP and SISSA journal·2017
Same journal

Effective contrast-enhanced preprocessing for intracranial artery segmentation in digital subtraction angiography.

Physics in medicine and biology·2026
Same journal

Improving Plan Quality in Adaptive Proton Therapy Using an Interactive Dose Modification Tool.

Physics in medicine and biology·2026
Same journal

Technical Note: Real-Time MLC Control and Latency Measurement Optimization with External Verification.

Physics in medicine and biology·2026
Same journal

Fetus-Specific Hematopoietic Stem Cell Dosimetry Framework for Leukemia-Relevant Target Cells During Prenatal Development.

Physics in medicine and biology·2026
Same journal

Deep learning-based dose prediction to enhance planning efficiency in cervical brachytherapy with hybrid applicators.

Physics in medicine and biology·2026
Same journal

Corrigendum: Referenceless MR thermometry-a comparison of five methods (2017<i>Phys. Med. Biol</i>.<b>62</b>1-16).

Physics in medicine and biology·2026
See all related articles

This study evaluates a camera-based electronic portal imaging system for intensity-modulated radiotherapy (IMRT) verification. Modified for dose tagging and reduced crosstalk, the system achieved +/-2.0 mm geometric and +/-1.25 MU dosimetric accuracy.

Area of Science:

  • Medical Physics
  • Radiotherapy Technology

Background:

  • Intensity-modulated radiotherapy (IMRT) requires precise verification.
  • Electronic portal imaging devices (EPIDs) are used for quality assurance in radiotherapy.
  • Commercially available EPID systems may require modifications for optimal performance.

Purpose of the Study:

  • To evaluate a camera-based electronic portal imaging system for IMRT verification.
  • To demonstrate modifications for improved dose accuracy and reduced image artifacts.
  • To assess the system's geometric and dosimetric accuracy in clinical scenarios.

Main Methods:

  • Evaluation of a commercial camera-based EPID.
  • Implementation of dose tagging using linac monitor chamber data.
  • Reduction of optical cross-talk within the imager.

Related Experiment Videos

  • Performance assessment including optical decay characteristics.
  • Geometric and dosimetric accuracy measurements.
  • Verification of a clinical breast IMRT treatment using dynamic multileaf collimation.

    • Main Results:

    • The modified EPID system demonstrated successful dose tagging and reduced optical cross-talk.
    • Geometric accuracy was determined to be +/-2.0 mm.
    • Dosimetric accuracy was determined to be +/-1.25 MU.
    • The system successfully verified a clinical breast IMRT treatment by tracking leaf positions and recording integrated intensity.

    Conclusions:

    • The modified camera-based EPID system is capable of accurate IMRT verification.
    • The implemented modifications enhance the system's reliability for clinical use.
    • This technology offers a viable solution for real-time quality assurance in IMRT delivery.