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

Electron energy constancy check using a five-chamber detector array

A K Ho1, C N deSouza, C H Sibata

  • 1Department of Radiation Medicine, Roswell Park Cancer Institute, Buffalo, NY 14263.

Medical Dosimetry : Official Journal of the American Association of Medical Dosimetrists
|January 1, 1994
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

Socioeconomic disparities and osteoarthritis impact hormone therapy adherence in breast cancer.

Breast (Edinburgh, Scotland)·2025
Same author

<i>Porphyromonas gingivalis</i> Impairs Oral Epithelial Barrier through Targeting GRHL2.

Journal of dental research·2019
Same author

Success rate of resuscitation after out-of-hospital cardiac arrest.

Hong Kong medical journal = Xianggang yi xue za zhi·2019
Same author

Human Papillomavirus 16 E6 Induces FoxM1B in Oral Keratinocytes through GRHL2.

Journal of dental research·2018
Same author

Uncommon liver lesions with multimodality imaging and pathology correlation.

Clinical radiology·2017
Same author

Exploration of Biomarkers for Amoxicillin/Clavulanate-Induced Liver Injury: Multi-Omics Approaches.

Clinical and translational science·2016

Two methods determine the 50% depth ionization (d50) using buildup materials for quality assurance. These methods offer a simpler alternative to water phantom measurements for routine checks.

Area of Science:

  • Medical Physics
  • Radiation Oncology

Background:

  • Accurate determination of the 50% depth ionization (d50) is crucial for radiation therapy quality assurance.
  • Traditional d50 determination using water phantoms can be time-consuming and resource-intensive.

Purpose of the Study:

  • To present two simplified methods for determining the d50 using buildup materials.
  • To compare the accuracy of these methods with traditional water phantom measurements.

Main Methods:

  • Two distinct methods utilizing buildup materials of varying thicknesses placed on a five-chamber detector array were developed.
  • Method 1 requires two sets of buildup materials for different electron beam energies (6-9 MeV and 12-20 MeV) from a Varian Clinac 2100C.
  • Method 2 determines d50 using only two data points for each energy.

Related Experiment Videos

Main Results:

  • The d50 depths determined by both buildup material methods were compared to those obtained using a standard water phantom.
  • The results indicate that these methods provide a viable alternative for d50 determination.

Conclusions:

  • The presented methods offer a simple and efficient approach to determine d50, particularly for departments with limited resources or specific detector arrays.
  • These techniques can streamline quality assurance procedures, including output, symmetry, and flatness checks.