At the OEGRO Annual Meeting 2025 in Krems, the Department of Radiation Oncology, Medical University Innsbruck presented their experience with the Integral Quality Monitor (IQM) following its clinical implementation into their radiotherapy workflow.
The team demonstrated how IQM is used as a real-time transmission detector for monitoring radiotherapy delivery based on a position-weighted dose–area product. IQM is currently in use for both machine QA and pre-treatment plan QA, with growing use in daily clinical practice.
Key Advantages Highlighted by the Innsbruck Team
- Real-time error detection during beam delivery
IQM enables near real-time identification of deviations in monitor units, MLC positions, and field geometry—providing immediate feedback during treatment delivery. - Significant time savings through automation
Thanks to automated data handling and minimal user interaction, IQM dramatically reduces QA workload. In clinical plan QA, the largest time savings were achieved by eliminating the need to create physical reference dose plans by hand, which simultaneously reduced the potential for transfer errors. - Versatile use for Machine QA and Plan QA
IQM supports daily output constancy checks, extended monthly machine QA, and automated pre-treatment plan QA—using a single system integrated directly at the LINAC. - High sensitivity and reproducibility
Clinical results and literature confirm excellent signal stability and strong sensitivity to delivery errors, with good agreement to established QA systems such as the Delta4 system (Scandidos). - Seamless integration into clinical workflows
IQM operates without additional setup for each plan and generates real-time monitoring, structured reports, and exportable data automatically.
“What convinced us was not only the sensitivity of IQM, but the efficiency it brings into daily clinical workflows—real-time monitoring with minimal user interaction.”
Gregor Simmer, Medical Physicist, University of Innsbruck
The Innsbruck experience shows that IQM is a powerful and time-saving expansion for conventional QA systems—supporting patient safety, workflow efficiency, and confidence in modern radiotherapy delivery.