System comparison

ESTRO 2026: Real-Time In-Vivo Dosimetry During Patient Treatment

Authors: Rayk Nachtigall, et al,  Strahlenzentrum Hamburg (Germany) Summary: This study presents the clinical implementation of the IQM system for real-time in-vivo dosimetry during patient treatment. The results demonstrated excellent VMAT agreement with γ passing rates above 98% while maintaining treatment accuracy. IQM enabled online dose verification and may eliminate the need for dedicated QA […]

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Implementation of a Transmission Chamber (IQM) as a Dosimetric System for Verification of Radiotherapy Treatments (English translation)

Authors: A. Gómez Barrado, A. Sánchez Jiménez. GenesisCare La Milagrosa, Spain Summary: A study from GenesisCare La Milagrosa (Madrid), presented at SEFM 2025, evaluated the IQM system across 18 linear accelerators and 106 SRS/SBRT treatments. The results confirmed that IQM is reliable, reproducible, and easy to integrate into clinical practice, even for complex techniques.

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Implantacion de Camara de transmission (IQM) como sistema dosimetrico de verificacion de tratamientos de radioterapia (Spanish)

Autores: A. Gómez Barrado, A. Sánchez Jiménez. GenesisCare La Milagrosa, Spain Resumen: Un estudio de GenesisCare La Milagrosa (Madrid), presentado en el SEFM 2025, evaluó el sistema IQM en 18 aceleradores y 106 tratamientos de SRS/SBRT. Los resultados confirmaron que IQM es fiable, reproducible y fácil de integrar en la práctica clínica, incluso en técnicas

Implantacion de Camara de transmission (IQM) como sistema dosimetrico de verificacion de tratamientos de radioterapia (Spanish) Read More »

A Comparison of Segment-by-Segment Versus Cumulative Signal Evaluation for Patient-Specific QA using the IQM

Author: Farideh Pak, PhD, et al, Cedars Sinai Medical Center, Los Angeles, CA, USA Summary: This study from Cedars Sinai Medical Center evaluates the IQM system for patient-specific QA across 37 VMAT treatment plans covering brain, spine, lung, and prostate sites. The authors compare segment-by-segment and cumulative signal analysis, demonstrating that segment-level evaluation improves the

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Beyond Conventional QA: IQM Real-time Monitoring for Every Patient

Author: Kumagai, S., Teikyo University Hospital, Tokyo, Japan Summary: Shinobu Kumagai from Teikyo University Hospital presents the clinical integration of the IQM System for real-time beam monitoring in radiotherapy. The talk highlights its application in VMAT-TBI, Online-ART, and daily treatments, demonstrating how IQM enhances safety, accuracy, and workflow efficiency across a wide range of clinical

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Experience of IQM at Southampton for SRS cases

Author: Chandrasekaran, M., et al, University Hospital Southampton, United Kingdom Summary: Mekala Chandrasekaran from University Hospital Southampton presented their successful implementation of IQM for single-isocentre SRS treatments of multiple brain metastases. By extending beam modeling to sub-centimeter fields, the team achieved segment-by-segment accuracy within 3%, confirming IQM’s precision and reliability for complex stereotactic QA.

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Experience of IQM at Southampton for CNS and SRS cases

Author: Smith, L., et al, University Hospital Southampton, United Kingdom Summary: Laura Smith from University Clinic Southampton presents their experience using IQM for CNS and SRS treatments. By replacing Delta4 with IQM, her team reduced verification time from 3 hours to under 30 minutes per case. The presentation highlights IQM’s efficiency, automation, and suitability for

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Longitudinal Evaluation of the IQM for Routine Clinical Quality Assurance of Photon Beams

Author: O. Grahm Valadie1, et al, Cedars-Sinai Medical Center, Los Angeles, CA Summary: The purpose of this project is to compare the QA capabilities of the IQM to clinically established QA devices and to shows its potential to efficiently replace current QA devices, while minimizing setup error for daily and monthly QA.

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