Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Videos

Field equivalence for clinical electron beams.

F M Khan¹, P D Higgins

¹Department of Radiation Oncology, Fairview University Medical Center, Minneapolis, MN 55455, USA.

Physics in Medicine and Biology

|February 24, 2001

Summary

Field equivalence allows finding equivalent circular electron fields for any beam size, shape, and energy. This concept aids in clinical dosimetry by simplifying treatment planning.

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

Establishing CBT-T in an NHS moderate-severe adult eating disorder service.

Eating disorders·2025

Same author

HLA-DQB1*05:144, a novel allele, discovered in a Southeast Asian donor for stem cell transplantation.

HLA·2017

Same author

Factors responsible for increased percent recirculation in arterio-venous fistula among the haemodialysis patients.

Bangladesh Medical Research Council bulletin·2013

Same author

IL15 levels on day 7 after hematopoietic cell transplantation predict chronic GVHD.

Bone marrow transplantation·2012

Same author

Management of differentiated thyroid carcinoma.

Mymensingh medical journal : MMJ·2011

Same author

Epithelial cells in PBSC grafts: source of donor-type epithelial cells after allogeneic transplantation?

Bone marrow transplantation·2011

Area of Science:

Medical Physics
Radiation Oncology

Background:

Electron beam therapy is a cornerstone of radiation oncology.
Accurate dose distribution is crucial for effective cancer treatment.
Understanding field equivalence simplifies treatment planning and delivery.

Purpose of the Study:

To examine the concept of field equivalence for electron beams.
To determine if equivalent circular fields can be found for arbitrary electron beam configurations.
To discuss the clinical implications of field equivalence in dosimetry.

Main Methods:

Application of pencil beam theory to circular fields.
Analysis of depth dose distributions for various field sizes, shapes, and energies.
Theoretical derivation of equivalent circular field parameters.

Main Results:

A method to find an approximately equivalent circular field for any electron beam size, shape, and energy was established.
The depth dose distribution of the original field is closely matched by the equivalent circular field.
The findings provide a practical approach for dose calculation.

Conclusions:

Field equivalence is a viable concept for electron beams.
Equivalent circular fields can simplify clinical dosimetry and treatment planning.
This approach enhances the precision and efficiency of radiation therapy.

Related Experiment Videos