Publications

The IQM System has been thoroughly evaluated by some of the world's leading radiation therapy centers.
Select your topic of interest from 12 articles, 11 posters,
19 presentations and 3 technical white papers.

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.

The physics behind the IQM signal

Author:
Robert Heaton, Princess Margaret Cancer Centre, Toronto (Canada)

Summary:
Presentation of the IQM calculation model in terms of the physical characteristics and behavior of linear accelerators.

Signal prediction for IQM

Author:
Robert Heaton, et al, Princess Margaret Cancer Centre, Toronto (Canada)

Summary:
Introduction of an accurate expected (reference) signal calculation algorithm

Online Dosimetry with IQM

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

Summary:
Evaluation of the IQM System for Online Dosimetry during the patient treatment. The long-term signal stability, the error detection sensitivity for induced errors, the correlation of the IQM and the Dose-Volume-Histogram as well as treatment plan verification with the IQM System has been evaluated.

Influence of the iQM

Influence of the IQM on high energy photon beam: A multi-centre study

Author:
Bozidar Casar, et al, Multi-centre study of 9 RT departments

Summary:
This article discusses the influence of the Integral Quality Monitor (IQM) transmission detector on photon beam properties. The authors evaluated the change of beam quality (beam hardening), surface dose and the beam attenuation of the IQM detector.

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