ArticlePhysics and imaging in radiation oncology2018
Remote beam output audits: a global assessment of results out of tolerance.
Article in Physics and imaging in radiation oncology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Robustness assessment of radiotherapy treatment plans in Switzerland.Zeitschrift fur medizinische Physik · 2026Article
- Results of a remote audit program of reference and non-reference dosimetry of photon beams using alanine detectors.Physics and imaging in radiation oncology · 2026Article
- Developing reference plans for evaluating global clinical trials credentialing and PSQA systems.Journal of applied clinical medical physics · 2025Article
- Development and international multicentre pilot testing of a postal dosimetry audit methodology for high dose rate brachytherapy.Physics and imaging in radiation oncology · 2024Article
- Dosimetric impact of calibration coefficients determined using linear accelerator photon and electron beams for ionization chamber in an on-site dosimetry audit.Journal of radiation research · 2024Article
- Monte Carlo evaluation of uncertainties in photon and electron TG-51 absorbed dose calibration.Journal of applied clinical medical physics · 2024Article
- A virtual audit system for intensity-modulated radiation therapy credentialing in Japan Clinical Oncology Group clinical trials: A pilot study.Journal of applied clinical medical physics · 2023Article
- A comparison of IROC and ACDS on-site audits of reference and non-reference dosimetry.Medical physics · 2019Article
Corrections and comments
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Authors and funding
20 authors.
Funding
Abstract
background and purposeRemote beam output audits, which independently measure an institution's machine calibration, are a common component of independent radiotherapy peer review. This work reviews the results and trends of these audit results across several organisations and geographical regions. MATERIALS AND
methodsBeam output audit results from the Australian Clinical Dosimetry Services, International Atomic Energy Agency, Imaging and Radiation Oncology Core, and Radiation Dosimetry Services were evaluated from 2010 to the present. The rate of audit results outside a +/-5% tolerance was evaluated for photon and electron beams as a function of the year of irradiation and nominal beam energy. Additionally, examples of confirmed calibration errors were examined to provide guidance to clinical physicists and auditing bodies.
resultsOf the 210,167 audit results, 1323 (0.63%) were outside of tolerance. There was a clear trend of improved audit performance for more recent dates, and while all photon energies generally showed uniform rates of results out of tolerance, low (6 MeV) and high (≥18 MeV) energy electron beams showed significantly elevated rates. Twenty nine confirmed calibration errors were explored and attributed to a range of issues, such as equipment failures, errors in setup, and errors in performing the clinical reference calibration. Forty-two percent of these confirmed errors were detected during ongoing periodic monitoring, and not at the time of the first audit of the machine.
conclusionsRemote beam output audits have identified, and continue to identify, numerous and often substantial beam calibration errors.
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