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Related Experiment Video

Updated: May 28, 2026

Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training
09:57

Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training

Published on: January 18, 2021

Evaluation of a 2D detector array for patient-specific VMAT QA with different setups.

Ramesh Boggula1, Mattias Birkner, Frank Lohr

  • 1Department of Radiation Oncology, University Medical Centre Mannheim, Mannheim, Germany. ramesh.boggula@umm.de

Physics in Medicine and Biology
|October 26, 2011
PubMed
Summary

MatriXX, a dosimetric device, effectively verifies volumetric modulated arc therapy (VMAT) plans. Using correction factors with the MULTICube phantom or a dedicated holder ensures fast, reliable, and accurate pre-treatment plan verification for advanced radiation therapy.

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Area of Science:

  • Medical Physics
  • Radiation Oncology
  • Radiotherapy Physics

Background:

  • Accurate pre-treatment plan verification is crucial for advanced radiotherapy techniques like intensity-modulated arc therapy (IMAT).
  • A fast and reliable dosimetric device is needed for verifying volumetric modulated arc therapy (VMAT) plans.
  • The MatriXX device's suitability for VMAT plan verification was investigated in different experimental setups.

Purpose of the Study:

  • To assess the accuracy and reliability of the MatriXX device for VMAT plan verification.
  • To develop and evaluate correction factors for beam angle dependence when using MatriXX with the MULTICube phantom.
  • To compare the performance of MatriXX in a stationary phantom setup versus a dedicated holder setup.

Main Methods:

Related Experiment Videos

Last Updated: May 28, 2026

Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training
09:57

Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training

Published on: January 18, 2021

  • Investigated MatriXX suitability in two setups: MatriXX/MULTICube (stationary phantom) and MatriXX/Holder (dedicated holder).
  • Developed beam angular-dependent correction factors (CFs) for the MatriXX/MULTICube setup.
  • Verified 12 VMAT plans with MatriXX/MULTICube and 13 VMAT plans with MatriXX/Holder, analyzing passing pixels (pp) using gamma criteria (2%/2 mm and 3%/3 mm).

    • Main Results:

    • The MatriXX/MULTICube setup showed beam angle dependence, with deviations up to ~17% without correction factors.
    • Application of correction factors improved passing pixels by 4.3% for the MatriXX/MULTICube setup.
    • The MatriXX/Holder setup demonstrated excellent agreement, achieving ~100% passing pixels for 30 VMAT plans.

    Conclusions:

    • The MatriXX device, with appropriate correction factors or in a dedicated holder, provides a fast, reliable, and accurate method for VMAT pre-treatment plan verification.
    • The MatriXX/Holder setup offers superior performance, yielding nearly 100% passing pixels.
    • Both investigated configurations of MatriXX are suitable for ensuring the accuracy of advanced arc therapy treatments.