Author: Melissa Ghafarian, et al, Vanderbilt University Medical Center, Nashville, USA Summary: The purpose of this study was to compare pre-treatment VMAT QA measurements and evaluate the MLC error sensitivity of two detectors: the IQM System and the Varian Portal Dosimetry 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 …
Combined use of IQM and an EPID-Based In Vivo Dose Monitoring System Read More »
The purpose of this study by Pasler, Marazzo, et al was to characterize a new single large-area ionization chamber for online and real-time beam monitoring.
Author: Adam Harpley, et al, Vanderbilt University Medical Center, Nashville (USA) Summary: The clinical physics group introduced a variety of clinically significant treatment delivery errors into 8 retrospective SBRT plans and compared the error sensitivity of IQM to their Varian Portal Dosimetry system.
Author: Haruna Yokoyama, et al, Kanazawa University (Japan) Summary: The clinical physics group introduced a variety of clinically significant treatment delivery errors into 6 different treatment techniques (3x 3DCRT, 1x IMRT and 2x VMAT) all utilizing 4MV treatment beams. They concluded that IQM was more sensitive to the MLC errors than the conventional QA method. …
Author: Stephen Martinez, et al, Vanderbilt University Medical Center, Nashville (USA) Summary: The clinical physics group aimed to compare the capability of the iQM system for optimizing MLC model specific parameters: Dynamic Leaf Gap and Transmission Factor to a IBA MatriXX spatial array. IQM shows a VERY small variation in the measured results and is …
Optimization of DLG and MLC transmission factors Read More »
Author: Marlies Pasler, Lake Constance Radiation Oncology, Singen-Friedrichshafen (Germany) Summary: Download the full presentation summarizing the first year’s clinical experience of using IQM for online QA during every single treatment fraction.. This presentation was given by Marlies Pasler, PhD at the ASTRO 2019 Annual Meeting in Chicago, IL
Author: Sonja Wegener, et al, Unversity Clinic Wurzburg (Germany) Summary: Clinical experience using IQM for VMAT Plan QA.
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)
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 …
