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 Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Identification of the Novel Tooth-Specific Transcription Factor AmeloD.

Journal of dental research·2018
Same author

SU-E-T-460: Isoeffective Dose Display (EQD2) for Composite Plan of Radiosurgery and Conventional 3D Radiotherapy.

Medical physics·2017
Same author

[Clinical reasoning supportive to a medical service provider as a tool for complaint management: a case study for pragmatic reasoning].

Gesundheitswesen (Bundesverband der Arzte des Offentlichen Gesundheitsdienstes (Germany))·2014
Same author

Pioglitazone treatment restores in vivo muscle oxidative capacity in a rat model of diabetes.

Diabetes, obesity & metabolism·2014
Same author

Combined in vivo and in silico investigations of activation of glycolysis in contracting skeletal muscle.

American journal of physiology. Cell physiology·2012
Same author

Single molecule tracking on supported membranes with arrays of optical nanoantennas.

Nano letters·2012
Same journal

Correction to "On the shape of the radiation survival curve in tumor spheroids: The role of oxygen heterogeneity".

Medical physics·2026
Same journal

Multi-view constrained semi-supervised vertebra detection for 3D ultrasound spine volume.

Medical physics·2026
Same journal

Accuracy of quantitative <sup>177</sup>Lu SPECT/CT imaging: A systematic review.

Medical physics·2026
Same journal

Physics-constrained dual-domain network for CBCT reconstruction from orthogonal X-rays in gynecologic radiotherapy.

Medical physics·2026
Same journal

Decomposition-based harmonization for quantitative PET imaging across scanners and radiotracers.

Medical physics·2026
Same journal

Development and evaluation of an in vivo dose-based monitoring system for electron FLASH radiation therapy.

Medical physics·2026
See all related articles

Related Experiment Video

Updated: Mar 2, 2026

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
08:34

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies

Published on: February 6, 2019

21.2K

SU-E-T-600: Utilizing Collimator Rotation to Increase Maximum Treatable Target Dimensions Using an Elekta Synergy-S

C Rhodes1, S Campbell1, W Shields1

  • 1Dept of Radiation Oncology, Cleveland, OH.

Medical Physics
|May 19, 2017
PubMed
Summary
This summary is machine-generated.

Rotating the collimator on the Elekta Synergy-S Beam Modulator MLC (BMx) system effectively extends the treatment length for larger targets. This technique allows for dosimetrically acceptable treatment of targets up to 3cm longer than the maximum field size.

Keywords:
CancerCollimatorsField sizeIntensity modulated radiation therapyMedical treatment planningModulatorsMultileaf collimators

More Related Videos

Treatment of Liver Metastases Using an Internal Target Volume Method for Stereotactic Body Radiotherapy
08:54

Treatment of Liver Metastases Using an Internal Target Volume Method for Stereotactic Body Radiotherapy

Published on: May 8, 2018

15.1K
Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy
08:17

Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy

Published on: June 7, 2015

16.3K

Related Experiment Videos

Last Updated: Mar 2, 2026

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
08:34

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies

Published on: February 6, 2019

21.2K
Treatment of Liver Metastases Using an Internal Target Volume Method for Stereotactic Body Radiotherapy
08:54

Treatment of Liver Metastases Using an Internal Target Volume Method for Stereotactic Body Radiotherapy

Published on: May 8, 2018

15.1K
Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy
08:17

Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy

Published on: June 7, 2015

16.3K

Area of Science:

  • Medical Physics
  • Radiation Oncology
  • Radiotherapy Technology

Background:

  • The Elekta Synergy-S with Beam Modulator Multi-Leaf Collimator (BMx) has a limited field size (21x16cm).
  • Treating target volumes exceeding 20cm in length poses a clinical challenge.
  • Collimator rotation can geometrically extend the effective treatment length.

Purpose of the Study:

  • To evaluate if a rotated collimator on the Elekta Synergy-S BMx enables dosimetrically acceptable treatments for targets larger than the maximum field size.
  • To assess the impact of collimator rotation on conformal treatment of extended planning target volumes (PTVs).

Main Methods:

  • Generated four isocentric treatment plans (four-field conformal, 7-field IMRT, single-arc VMAT, modified double-arc VMAT) for rod-shaped targets (21-23cm length, 1-5cm width) in water.
  • Utilized a collimator angle of 55° for all plans.
  • Defined successful treatment as 99% target volume coverage by 95% of the prescribed dose.
  • Assessed conformality using the ratio of the volume exposed to the prescribed isodose and the target volume.

Main Results:

  • Targets up to 23cm in length were successfully treated with specific widths (e.g., 23cm length, 4cm width).
  • The modified double-arc VMAT (MDAV) method achieved successful treatment for all tested extended targets.
  • The VMAT and IMRT methods were successful for specific target lengths (21cm and 23cm for VMAT; 21cm for IMRT).
  • Average conformality was approximately 2.5, excluding 1cm wide targets.

Conclusions:

  • Rotating the BMx collimator on the Elekta Synergy-S machine can extend target treatment length by up to 3cm for targets up to 5cm wide.
  • Further research is needed to determine the clinical applicability for treating head and neck tumors and spinal masses.