Radiotherapy 3D printing needs standardized quality assurance across institutions
Inter-centre material variability supports shared QA datasets and standardized acceptance criteria for clinical radiotherapy 3D printing.
Tag
QA
Submillimetre MLC errors substantially altered HyperArc brain metastasis dose
A 1 mm symmetric MLC closing reduced minimum GTV dose by 25%, while translations caused cumulative target undercoverage.
Exit-dose gamma alerts identified head-and-neck replanning needs on Halcyon-E
Strict exit-dose gamma thresholds correlated with anatomical change and identified all clinically replanned patients in a retrospective validation cohort.
Simple phantoms increased students’ reported understanding of radiation medicine
Low-cost diagnostic and treatment phantoms improved students’ self-reported understanding of radiation medicine, although formal learning outcomes were not assessed.
Hybrid radiomics model improved tomotherapy PSQA prediction but transferred poorly across centres
Combining plan complexity with three-dimensional dose radiomics improved tomotherapy PSQA prediction, although performance deteriorated substantially during cross-institution testing.
Biopsy localization uncertainty substantially altered HDR prostate brachytherapy dose estimates
Millimeter-scale localization uncertainty shifted assigned biopsy doses by several Gy and made nominal DVH threshold classification frequently unreliable.
Additional PMMA changed mammography multimeter calibration coefficients by up to 42%
Spectral hardening altered multimeter calibration by up to 11% for kerma, 37% for HVL and 42% for voltage.
Deep-learning dose prediction generalized across six head and neck radiotherapy centres
A model trained at one centre closely predicted doses in 560 head and neck plans from six external institutions.
Three MRI radiotherapy guidelines were largely consistent but differed in scope
IPEM, AAPM and NCS recommendations largely aligned, with complementary guidance for MRI simulation, MR-only workflows and MR-Linac quality assurance.
GPT-4.1 retrieved TrueBeam troubleshooting history but retained safety risks
A retrieval-augmented GPT-4.1 chatbot rapidly surfaced previous TrueBeam faults, but procedural, role-definition and safety errors remained.
Interpretable autoencoder detected anomalous IMRT plans with high discrimination
An autoencoder identified anomalous IMRT plans with an area under the curve of 0.98 and explained which parameters drove each alert.
Dose reporting mode affected spine SBRT audit results
A national end-to-end audit found acceptable spine stereotactic radiotherapy accuracy but systematic differences between dose-reporting conventions.
VMAT lattice SFRT was deliverable across Edge and Halcyon linacs
VMAT-based lattice SFRT achieved cross-platform deliverability with gamma pass rates above 90% and preserved peak-to-valley dose ratios.
Deep learning reduced head and neck auto-segmentation editing, but user variability persisted
Deep learning auto-segmentation reduced editing, but both minimal and excessive manual edits were associated with lower clinical acceptability.
Photon-counting computed tomography estimated physical density with 5.5% phantom error
Photon-counting computed tomography generated effective atomic number and physical density images directly from virtual monoenergetic images.