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 multipurpose phantom for use with electronic portal imaging devices

M C Kirby1

  • 1North Western Medical Physics Department, Christie Hospital, Manchester, UK.

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

A low-cost phantom aids electronic portal imaging device (EPID) quality assurance. It verifies x-ray/light field congruence and measures image displacement, ensuring accurate radiotherapy delivery.

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 use of computed radiography for routine linear accelerator and simulator quality control.

The British journal of radiology·2009
Same author

Design and implementation of an electronic data recording and processing system for physics quality control checks in external beam radiotherapy.

The British journal of radiology·2006
Same author

Developments in electronic portal imaging systems.

The British journal of radiology·2006
Same author

Dosimetric characteristics of the Elekta Beam Modulator.

Physics in medicine and biology·2005
Same author

Verification of dynamic multileaf collimation using an electronic portal imaging device.

Physics in medicine and biology·2000
Same author

The performance of a fluoroscopic electronic portal imaging device modified for portability.

The British journal of radiology·2000

Area of Science:

  • Medical Physics
  • Radiotherapy Technology
  • Diagnostic Imaging

Background:

  • Electronic Portal Imaging Devices (EPIDs) are crucial for radiotherapy verification.
  • Accurate measurement of radiation fields and image alignment is essential for precise treatment delivery.
  • Existing methods for EPID quality assurance may be complex or costly.

Purpose of the Study:

  • To design and evaluate a simple, low-cost, multipurpose phantom for EPID calibration.
  • To assess the phantom's utility in verifying x-ray/light field congruence and distance accuracy.
  • To investigate the phantom's capability in monitoring image displacement and rotation at various gantry angles.

Main Methods:

  • A multipurpose phantom was constructed with high precision.
  • The phantom was used with an EPID to test its spatial resolution and built-in measurement tools.
  • X-ray/light field size and congruence were verified for fields up to 200 mm x 200 mm.
  • Distance measuring capabilities, image displacement, and rotation were analyzed at different gantry angles.

Main Results:

  • The phantom allows for verification of x-ray/light field size and congruence up to 200 mm x 200 mm at any gantry angle.
  • The phantom accurately assesses the distance measuring capabilities of EPIDs over time.
  • Quantification and monitoring of image displacement and rotation with gantry angle are achievable.

Conclusions:

  • The developed phantom is a cost-effective tool for comprehensive EPID quality assurance.
  • It enables precise verification of geometric accuracy in radiotherapy imaging.
  • Regular use of this phantom can help maintain the accuracy and reliability of EPID systems.

Related Experiment Videos