ArticleRadiation oncology (London, England)2023
Validation of the relative biological effectiveness of active-energy scanning carbon-ion radiotherapy on a commercial treatment planning system with a microdosimetic kinetic model.
Article in Radiation oncology (London, England), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Comparative evaluation of the Mayo Clinic Florida microdosimetric kinetic model and mMKM for carbon ion treatment planning: A matRad-based analysis.Journal of applied clinical medical physics · 2026Article
- Revisiting fractionation in prostate carbon ion therapy: first comparative analysis of biologically effective dose using mMKM with diverse parameters.Radiation oncology (London, England) · 2026Article
- Systematic analysis of biological endpoint variability and implications for quantitative modeling of the FLASH sparing effect.Physics and imaging in radiation oncology · 2026Review
- The Estimated Difference in Biologically Effective Dose Between Two-Opposing-Fields-Per-Day and One-Alternating-Field-Per-Day Carbon Ion Radiation Therapy for Prostate Cancer.Advances in radiation oncology · 2025Article
- Quantifying Sensitivity of Carbon RBE Models to Reference Parameter Variations.Radiation research · 2025Article
- A deep learning model for predicting the modified micro-dosimetric kinetic model-based dose and the dose-averaged linear energy transfer for prostate cancer in carbon ion therapy.Physics and imaging in radiation oncology · 2024Article
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4 authors.
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Abstract
backgroundThe study objective was to validate the relative biological effectiveness (RBE) calculated by the modified microdosimetric kinetic model in RayStation (Ray-MKM) for active-energy scanning carbon-ion radiotherapy.
methodsThe Ray-MKM was benchmarked using a spread-out Bragg-peak (SOBP) plan, which was suggested in literature from the National Institute of Radiobiological Science (NIRS) in Japan. The residual RBE differences from the MKM at NIRS (NIRS-MKM) were derived using several SOBP plans with different ranges, SOBP widths, and prescriptions. To investigate the origins of the differences, we compared the saturation-corrected dose-mean specific energy [Formula: see text] of the aforementioned SOBPs. Furthermore, we converted the RBE-weighted doses with the Ray-MKM to those with local effect model I (LEM doses). The purpose was to investigate whether the Ray-MKM could reproduce the RBE-weighted conversion study.
resultsThe benchmark determined the value of the clinical dose scaling factor, [Formula: see text], as 2.40. The target mean RBE deviations between the Ray-MKM and NIRS-MKM were median: 0.6 (minimum: 0.0 to maximum: 1.69) %. The [Formula: see text] difference in-depth led to the RBE difference in-depth and was remarkable at the distal end. The converted LEM doses from the Ray-MKM doses were comparable (the deviation being - 1.8-0.7%) to existing literature.
conclusionThis study validated the Ray-MKM based on our active-energy scanning carbon-ion beam via phantom studies. The Ray-MKM could generate similar RBEs as the NIRS-MKM after benchmarking. Analysis based on [Formula: see text] indicated that the different beam qualities and fragment spectra caused the RBE differences. Since the absolute dose differences at the distal end were small, we neglected them. Furthermore, each centre may determine its centre-specific [Formula: see text] based on this approach.
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