Publications

The IQM System has been thoroughly evaluated by some of the world's leading radiation therapy centers.
Select your topic of interest from 14 articles, 15 posters,
18 presentations and 3 technical white papers.

UFS - Sensitivity analysis of two commerical

Sensitivity evaluation of two QA system to organ-dose variation of VMAT plans

Author:
Oluwaseyi M. Oderinde, et al, University of the Free State, Bloemfontein (South Africa)

Summary:
Assess the dose variation sensitivity of two quality assurance (QA) devices (IQM and MatriXXEvolution)

White Paper: Matching with IQM – The GenesisCare experience

Author:
Kilian Michel, et al, iRT Systems, Koblenz (Germany)

Summary:
Four (4) Elekta Versa HD Linear accelerators at different sites within a network of 16 cancer centers were matched for the 6MV beam energy. As part of commissioning IQM detectors at each of the 16 sites we investigated the agreement of IQM and waterphantom measurements among the four matched machines and implemented a universal beam model to calculate predicted IQM measurements for them.

Wuerzburg - Sensitivity of the IQM (2)

Sensitivity of the IQM to errors of VMAT plans

Author:
Gary Razinskas, et al, Unversity Clinic Wurzburg (Germany)

Summary:
This article verifies the accuracy of the signal prediction for the Synergy Agility MLC. Tolerance criteria for VMAT plan verification with the IQM were obtained from the observed sensitivity for the detection of incorrectly delivered plans. This study used 60 VMAT plans to compare the measured and the calculated signal.

Photon Beam QA with IQM: A Multicenter Study

Author:
Andrew Veres, et al, Multi-centre study of 3 RT departments

Summary:
The clinical research group developed and validated an efficient machine performance and quality assurance (QA) protocol using the IQM system. The authors concluded that the IQM system provides a very efficient process for performing quality control and quality assurance of a linear accelerator. The IQM system provides an automated approach for an efficient dosimetric characterization of a linear accelerator.

Saito - Comparison of MLC error

Comparison of MLC error sensitivity of various QA systems for VMAT Plan QA

Author:
Masahide Saito, et al, University of Yamanachi (Japan)

Summary:
This article compares the MLC error sensitivity of various measurement devices for VMAT pre‐treatment quality assurance (QA).

UFS - A new wedge-shaped

A new wedge-shaped ion chamber component for BEAMnrc to model the IQM System

Author:
Oluwaseyi Michael Oderinde, et al, University of the Free State, Bloemfontein (South Africa)

Summary:
Development of a new component module (CM) to accurately model the IQM to be used in the BEAMnrc Monte Carlo (MC) code

Marrazzo - Real-time beam monitoring

Real-time beam monitoring for error detection in IMRT plans and impact on DVH

Author:
Livia Marrazzo, et al, Multi-centre study of 3 RT departments

Summary:
This article shows the ability of detecting small delivery errors with a transmission detector for online monitoring of Intensity Modulated Radiation Therapy (IMRT) treatments. The authors also show how the IQM signal deviations strongly correlate with changes in the dose-volume-histogram for the PTV and OAR’s.

Pasler Marrazzo - Error detection capability

Error detection capability of IQM: an validation study for online VMAT monitoring

Author:
Marlies Pasler, Livia Marrazzo, et al, Lake Constance Radiation Oncology Center, Friedrichshafen (Germany) and University of Florence (Italy)

Summary:
Deviations in dose distributions between the original and error-induced plans were compared in terms of detector signal deviation, dose-volume histogram (DVH) metrics and 2D γ-evaluation.

Real-time verification of VMAT delivery

Author:
Makan Farrokhkish, et al, Princess Margaret Cancer Centre, Toronto (Canada)

Summary:
Evaluation of the IQM beam monitoring performance to assess the accuracy and reproducibility of the linac beam delivery. The signal calculation accuracy and measurement reproducibility as well as the error detection capability of the IQM System was evaluated. For this study the author analyzed 52800 beam segments.

Beam hardening and attenuation of photon beams

Author:
Bozidar Casar, et al, Institute of Oncology, Ljubljana (Slovenia)

Summary:
Evaluation of the effects of the IQM detector on photon beam properties

Correlation of error detection sensitivities for two VMAT QA systems

Author:
Kilian Michel, Lake Constance Radiation Oncology Center, Singen-Friedrichshafen (Germany)

Summary:
Sensitivity of PTW Octavius, IBA Dolphin and IQM for various delivery errors

IMRT Plan QA with IQM

Author:
Sonja Wegener, et al, Unversity Clinic Wurzburg (Germany)

Summary:
Evaluation of the IQM System for IMRT plan QA. The IQM Calculation algorithm has been validated for a wide spectrum of clinical IMRT cases. The error sensitivity of the IQM System has been tested with a variety of induced errors. The error detection capability of the IQM System has been compared against their current IMRT QA approaches.

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