Low-dose brain exposure diverged sharply between SRT platforms as metastasis number increased
CyberKnife best contained low-dose spread at high lesion burdens but required substantially longer treatment than faster VMAT strategies.
Tag
dosimetry
Higher immune-cell radiation dose was associated with worse breast cancer-specific survival
Each 1-Gy increase in estimated immune-cell dose was associated with 66% higher breast cancer mortality after multivariable adjustment.
Unshielded SunSILICON detector performed reliably for small-field photon dosimetry
The unshielded SunSILICON detector required only modest corrections in small fields, while the shielded version became unreliable below approximately 2 cm.
High-density bolus provided accurate superficial photon dose when air gaps were minimized
A 1 cm high-density bolus overcame 6 MV photon build-up, but a 2 cm air gap reduced small-field skin dose by 21%.
TLD-100 response varied systematically with synchrotron proton dose rate
TLD-100 over-responded below 7 Gy/s and under-responded above 300 Gy/s, despite remaining dose-independent from 3 to 18 Gy.
Tomotherapy improved lung sparing in whole-pleural irradiation for disseminated thymic tumors
Tomotherapy improved target coverage and reduced bilateral lung exposure compared with VMAT and fixed-field IMRT in 20 whole-pleural irradiation cases.
Automated lattice radiotherapy evaluation cut analysis time nearly eightfold
An Eclipse-based tool reduced lattice plan evaluation from 15.4 to 2.0 minutes while maintaining close agreement with manual measurements.
Helium pencil beam commissioning achieved submillimetre range accuracy and robust dose agreement
A scanned helium beamline achieved submillimetre range accuracy and generally ≤3% dose agreement, supporting further translation toward clinical helium therapy.
Modelled actinium-225 delivery reduced glioblastoma clonogens but had limited spatial reach
Convection-enhanced actinium-225 markedly reduced modelled clonogenic survival, but effective coverage extended only about 1.4 cm from each catheter.
Glioblastoma brachytherapy remains limited by non-standardized dosimetry
Modern intracavitary platforms can intensify pericavitary dose immediately after surgery, but standardized patient-specific dosimetry and comparative clinical evidence remain lacking.
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.
HyperSight protocol selection substantially changed CBCT organ dose
Low Dose HyperSight protocols reduced exposure by 55%, while Slow and Large protocols increased imaging dose and accentuated secondary-risk estimates.
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.
Mean lung dose strongly predicted pneumonitis after adjuvant breast radiotherapy
A mean lung dose threshold of 12.70 grays strongly separated patients who developed radiation pneumonitis after adjuvant breast radiotherapy.
Surface-contacted 3D bolus plus MLC reduced proton PBS lateral penumbra
Surface-contacted 3D boluses generally narrowed lateral penumbra and reduced surrounding dose versus a nozzle-mounted range shifter in proton PBS.