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.
Tag
dosimetry
Multidisciplinary radiopharmaceutical dosimetry changed management in one-third of selected patients
In 19 high-risk patients receiving 177Lu-PSMA-617, post-cycle 1 dosimetry changed management in 32%, prompting five activity reductions and one delay.
Same-day hyaluronic acid spacer reduced rectal dose in prostate brachytherapy
Same-day hyaluronic acid rectal spacer placement reduced rectal dose while preserving ultrasound-based prostate brachytherapy planning.
Tumor treating field arrays increased surface dose during photon radiotherapy
Tumor treating field arrays caused substantial surface dose enhancement and measurable dose attenuation during 6-megavolt photon irradiation.
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.
Optical surface imaging supported Monte Carlo dosimetry for total skin electron therapy
Photogrammetry-derived body surface models enabled Monte Carlo evaluation of total skin electron therapy dose homogeneity and hot-cold spot locations.
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.
Monte Carlo simulations identified depth-specific settings for proton minibeam radiation therapy
Simulated proton minibeams preserved spatial fractionation and target homogeneity for targets up to 20 centimetres with depth-adapted beam widths and spacing.
Higher left anterior descending coronary artery dose was associated with cardiac events after breast radiotherapy
A maximum left anterior descending coronary artery dose of at least 12 Gy was independently associated with higher long-term cardiac risk.
Tissue heterogeneity substantially alters absorbed dose in intraoperative radiotherapy
Absorbed dose near the applicator varied markedly by tissue composition despite accurate Monte Carlo calculation by the treatment planning system.
CyberKnife reduced low-dose exposure in left-sided partial-breast irradiation
CyberKnife improved conformity and reduced cardiac, pulmonary, and low-dose exposure, while noncoplanar linac techniques remained clinically acceptable alternatives.
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.
Brain radiotherapy alone did not deplete circulating lymphocytes in a prospective cohort
Circulating lymphocyte counts remained stable during brain radiotherapy without concurrent chemotherapy, consistent with low estimated blood and cervical lymph-node dose