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.

Talamonti - Combined use of IQM and Portal Dosimetry

Combined use of IQM and an EPID-Based In Vivo Dose Monitoring System

Author:
Cinzia Talamonti, et al, University of Florence (Italy)

Summary:
Evaluation of the combined use of the IQM system and SoftDiso portal dosimetry software, for in vivo dose monitoring by simultaneous detection of delivery and patient setup errors in whole breast irradiation. The combined use of the IQM and SoftDiso allows for fast identification of both delivery and setup errors and substantially reduces the impact of error identification and correction on the treatment workflow.

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.

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.

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.

Pre-clinical tests of the IQM system

Author:
Marlies Pasler, Lake Constance Radiation Oncology Center, Friedrichshafen (Germany)

Summary:
Evaluation of the potential of the IQM System to catch errors before they become clinically relevant. They also checked if IQM would help them to improve the efficiency of their processes and finally they checked if IQM would replace their current pre-treatment QA. They concluded that IQM could improve the efficiency of their workflow and that the error detection capabilities are sufficient for clinical practice.

Verifying TBI with IQM

Author:
Gabriele Guidi, et al, University Hospital of Modena (Italy)

Summary:
Evaluation of IQM for the verification of TBI treatments. They investigated the influence of the IQM Detector on depth dose curves and beam profiles for an extended SSD of 170cm. The presentation outlines the considerations that should be applied when utilizing IQM for TBI verification. They concluded that IQM can be used for TBI verification.

Testing IQM

Author:
Cinzia Talamonti, et al, University of Florence, AOU Careggi, Florence (Italy)

Summary:
The authors evaluated the IQM during the pre-clinical testing. She concludes that IQM provides optimal performance for signal reproducibility of complex IMRT plans. IQM is capable of detecting small errors in MU and leaf positions sufficient for clinical practice

Reproducibility and sensitivity of IQM

Author:
Chiara Arilli, et al, University of Florence, AOU Careggi, Florence (Italy)

Summary:
The authors evaluated the output signal reproducibility and sensitivity in detecting small errors in delivery parameters of IMRT step and shoot treatments using the IQM System as well as the correlation between IQM signal variations and 3Dγ, 2Dγ and DVH parameters.

UC Davis

Characterization and evaluation of the IQM System

Author:
David Hoffman, UC Comprehensive Cancer Center, Sacramento (USA)

Summary:
This article outlines a comprehensive evaluation of the Integral Quality Monitor (IQM) that took place at the UC Davis Comprehensive Cancer Center throughout the year 2015.

In vivo dosimetry of stereotactic radiation therapy

Author:
Jianguo Qian, et al, Johns Hopkins University, Baltimore (USA)

Summary:
The author draws the preliminary conclusion that IQM is a stable dosimetric system and can detect dosimetric deviations caused by small leaf errors in stereotactic radiation therapy. The sensitivity to leaf errors is more pronounced for relatively small fields (i.e., small targets) in SBRT. IQM appears to be more sensitive than Mapcheck2 to small leaf errors in small SBRT targets while showing similar sensitivity in relatively large SBRT targets.

In vivo dosimetry of conventional and rotational IMRT

Author:
Lan Lin, et al, Johns Hopkins University, Baltimore (USA)

Summary:
Evaluation of the accuracy, sensitivity (picket-fence test) and constancy of the IQM for conventional intensity modulated radiation therapy (IMRT) and rotational volumetric modulated arc therapy (VMAT).

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