System comparison Archives

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

Juergen Oellig

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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Implementation of a gantry mounted ion chamber for the machine QA and clinical routine

Juergen Oellig

Author: R. Nachtigall, et al, Strahlenzentrum Hamburg MVZ, Germany Summary: The purpose of this project is to evaluate if the IQM is a reliable alternative to the phantom based patient plan verification offering the possibility to shift the QA to the first treatment fraction.

Implementation of a gantry mounted ion chamber for the machine QA and clinical routine Read More »

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

Juergen Oellig

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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Using the IQM Transmission Detector to Monitor Linac Performance

Juergen Oellig

Author: Dan Pavord, Allegheny Health Network, Pittsburgh, PA Summary: Dan Pavord, Chief of Medical Physics at Allegheny Health Network in Pittsburgh, presented groundbreaking findings on the use of the Integral Quality Monitor (IQM) for comprehensive machine quality assurance (QA).

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Feasibility of using a transmission ion chamber for QA tests of medical linear accelerators

Juergen Oellig

Author: Makan Farrokhkish, et al, Multi-Center Study Summary: This multi-center study investigated the IQM System for constancy measurements of various beam parameters for photon beams. The results suggest that the system can be used for most of the routine QA tests effectively and efficiently. .

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Measuring Photon Beam Energy Changes on an Elekta Versa HD using 5 methods

Juergen Oellig

Author: K.L. Yun, et al, Allegheny Health Network (USA) Summary: The clinical physics group compared the sensitivity of the IQM System to beam energy changes against 4 other conventional methods. They concluded that the IQM device was approximately twice as sensitive as the other chamber methods. .

Measuring Photon Beam Energy Changes on an Elekta Versa HD using 5 methods Read More »

Comparison of IQM and SRS MapCheck for pre-treatment SRS/SRT QA

Juergen Oellig

Author: Y. Liang, et al, Allegheny Health Network (USA) Summary: The clinical physics group compared Sun Nuclear SRS MapCheck and IQM for the patient-specific QA of three single ISO multi-met SRS plans created with the Brainlab Elements MME TPS. They concluded that both systems showed good agreement between the QA results, but that the QA

Comparison of IQM and SRS MapCheck for pre-treatment SRS/SRT QA Read More »

Comparison of pre-treatment VMAT QA between IQM and Varian Portal Dosimetry

Juergen Oellig

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.

Comparison of pre-treatment VMAT QA between IQM and Varian Portal Dosimetry Read More »

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

Juergen Oellig

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 »

System comparison

Experience of IQM at Southampton for SRS cases

Experience of IQM at Southampton for CNS and SRS cases

Implementation of a gantry mounted ion chamber for the machine QA and clinical routine

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

Using the IQM Transmission Detector to Monitor Linac Performance

Feasibility of using a transmission ion chamber for QA tests of medical linear accelerators

Measuring Photon Beam Energy Changes on an Elekta Versa HD using 5 methods

Comparison of IQM and SRS MapCheck for pre-treatment SRS/SRT QA

Comparison of pre-treatment VMAT QA between IQM and Varian Portal Dosimetry

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

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