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

Scatter dose for wedged fields.

L H Brown1, R L Siddon, B E Bjärngard

  • 1Joint Center for Radiation Therapy, Harvard Medical School, Boston, MA 02115.

Physics in Medicine and Biology
|October 1, 1987
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

The Canadian National EMS Research Agenda: Impact and Feasibility of Implementation of Previously Generated Recommendations.

CJEM·2015
Same author

The expression of positive and negative schizotypy in daily life: an experience sampling study.

Psychological medicine·2012
Same author

Total gastrectomy.

The Surgical clinics of North America·2010
Same author

The effect of road improvements on motor vehicle crash injury and mortality in a developing country.

Annual proceedings. Association for the Advancement of Automotive Medicine·2002
Same author

National EMS Research Agenda.

Prehospital emergency care·2002
Same author

Doses near the surface during total-body irradiation with 15 MV X-rays.

International journal of cancer·2002
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

Scatter dose in 4 and 8 MV wedged x-ray beams was studied. Scatter-to-primary ratios (SPR) showed minimal differences compared to non-wedged beams, validating existing rules.

Area of Science:

  • Medical Physics
  • Radiotherapy Physics
  • Radiation Dosimetry

Background:

  • Understanding scatter dose is crucial for accurate radiotherapy planning.
  • Wedged beams are commonly used to create dose homogeneity across irregular targets.
  • Scatter-to-primary dose ratios (SPR) quantify the contribution of scattered radiation.

Purpose of the Study:

  • To investigate the behavior of scatter dose in 4 and 8 MV wedged x-ray beams.
  • To compare scatter-to-primary dose ratios (SPR) in wedged beams with those in non-wedged beams.
  • To assess the validity of the product rule for scatter dose calculations in wedged beams.

Main Methods:

  • Calculation of scatter-to-primary dose ratios (SPR) for wedged and non-wedged x-ray beams at 4 and 8 MV.

Related Experiment Videos

  • Comparison of SPR values at various points within the radiation field.
  • Evaluation of the product rule's applicability for off-axis points.

    • Main Results:

    • SPR for wedged and non-wedged beams showed only a few percent difference on the central axis.
    • This difference increased slightly with wedge angle and field size.
    • Differences in SPR were larger off-axis but generally less than 3% of the central axis total dose.
    • The product rule remained valid within similar limits as for non-wedged beams.

    Conclusions:

    • The scatter dose behavior in 4 and 8 MV wedged beams is similar to non-wedged beams, with minor predictable variations.
    • Existing dosimetric rules, like the product rule, are applicable to wedged beams within established tolerances.
    • These findings support the accurate implementation of wedged beams in radiotherapy planning.