Unshielded silicon diode detector supported clinical electron beam dosimetry
The SunSILICON detector directly measured electron beam depth doses, profiles, and output factors with close agreement to reference detectors.
Tag
QA
Upright computed tomography showed stable numbers for proton therapy planning
Upright computed tomography showed stable computed tomography numbers and greater than 99% proton dose gamma agreement versus conventional computed tomography.
Computed tomography geometric distortion was measurable across radiotherapy planning scanners
All eight radiotherapy planning computed tomography scanners showed measurable geometric distortion, with maximum values up to 1.88 millimetres.
Automated report-based chart checking detected residual errors after physics review
An automated report-based chart checker detected residual errors in 37.1% of manually reviewed external beam radiotherapy plans.
Volumetric modulated arc therapy complexity surveillance predicted patient-specific quality assurance results
Aperture irregularity and modulation complexity score were the strongest plan-complexity predictors of patient-specific quality assurance pass rate.
Radiomics reproducibility depended on preprocessing in low-field magnetic resonance-guided radiotherapy
N4 bias correction with z-score normalization produced the most stable radiomic features on a 0.35 tesla magnetic resonance linear accelerator.
Microstructure air chamber showed linear dose response for conventional and ultra-high dose rate radiotherapy
A thick gas electron multiplier air chamber showed strong dose linearity under conventional and ultra-high dose rate conditions.
DGMP toolkit finds no single method sufficient for stereotactic radiotherapy quality assurance
No single patient-specific quality assurance method covered all stereotactic radiotherapy risks, supporting combinations of measurement, independent calculation, imaging, and monitoring.
Failure analysis identifies target definition and motion management as key risks in stereotactic arrhythmia radioablation
Multimodal registration, motion management, and arrhythmia substrate definition were the highest-risk steps in stereotactic arrhythmia radioablation.
End-to-end test achieved high dosimetric agreement across adaptive platforms
A reusable phantom-based test verified simulation-omitted adaptive workflows on cone-beam computed tomography-guided and magnetic resonance-guided treatment systems.
Commercial lung phantom density errors can reduce target coverage by 3%
Lot-to-lot density variation in lung-equivalent inserts reduced planning target volume coverage by up to 3%, exceeding the stated clinical tolerance.
Low monitor unit deliveries show pulse-limited variability on a modern linear accelerator
Discrete pulse counts limited fractional monitor unit precision, particularly for high-dose-per-pulse flattening filter-free beams.
Reference beam data may streamline commissioning but cannot replace local validation
Reference datasets can support linear accelerator beam modelling, but machine-specific measurements remain essential for small fields, complex delivery, and long-term verification.
Explainable machine learning predicts structure-specific quality assurance performance in intensity-modulated radiotherapy
Anatomy- and dose-based machine learning predicted gamma passing rates accurately for organs at risk, but less reliably for target volumes.