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 shaping device for irregular electron fields for the Therac-20 accelerator.

R Muller-Runkel, J Ovadia, F Borger

    Medical Physics
    |January 1, 1985
    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

    Safety of maternal long-term indomethacin tocolysis.

    The International journal of risk & safety in medicine·2013
    Same author

    Gynecological chair syncope in elderly women: practical implications for general practitioners and gynecologists.

    The International journal of risk & safety in medicine·2013
    Same author

    Measurement of dosimetric parameters for the Alpha-Omega high-dose-rate Iridium-192 source.

    Medical dosimetry : official journal of the American Association of Medical Dosimetrists·2005
    Same author

    [Intensive care within the context of military long-distance transport].

    Anasthesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie : AINS·2004
    Same author

    Changing face and different countenances of prostate cancer: racial and geographic differences in prostate-specific antigen (PSA), stage, and grade trends in the PSA era.

    International journal of cancer·2001
    Same author

    Determination of the tissue attenuation factor along two major axes of a high dose rate (HDR) 192Ir source.

    Medical physics·1999

    A new device allows for continuously variable electron field sizes using a Therac-20 accelerator. Placing the device on adjustable trimmer bars enhances its utility for precise radiation therapy treatments.

    Area of Science:

    • Medical Physics
    • Radiation Oncology

    Background:

    • The Therac-20 accelerator is a common tool in radiation therapy.
    • Precise control over radiation field size is crucial for effective cancer treatment and minimizing off-target exposure.

    Purpose of the Study:

    • To describe a novel device for shaping electron fields from a Therac-20 accelerator.
    • To evaluate the advantages of continuously variable field sizes and optimal device placement.

    Main Methods:

    • A shaping device was developed for the Therac-20 accelerator.
    • The device was tested with varying field sizes and placements on trimmer bars.
    • Attenuation levels were assessed using Cerrobend blocks.

    Main Results:

    • The device enables continuously variable electron field sizes.

    Related Experiment Videos

  • Optimal placement on the shorter set of adjustable electron trimmers was identified.
  • 1-cm thick Cerrobend blocks achieved a 5% attenuation level for 20-MeV electrons and large fields.

    • Conclusions:

    • The described device offers enhanced control over electron beam shaping for the Therac-20.
    • Variable field sizes improve treatment precision in radiation oncology.
    • Specific shielding configurations are effective for high-energy electron beams.