Respiratory motion remained small during postoperative whole-breast radiotherapy.
Mean breast target displacement was below 1.3 mm in every direction, with calculated respiratory margins of approximately 1 mm.
Tag
technical-relevance
Conventional fractionation substantially reduced gastrointestinal motility–driven interplay in pancreatic proton therapy.
Gastrointestinal motility reduced single-fraction target coverage and broadened organ-at-risk dose ranges, while conventional fractionation substantially attenuated the interplay effect.
Multimodal respiratory tracking enabled real-time voxel-wise anatomical reconstruction during radiotherapy
The patient-specific framework outperformed three comparison methods and reconstructed respiratory anatomy in 15.6 milliseconds per frame.
Electromagnetic tracking enabled sub-5-mm magnetic resonance imaging–ultrasound guidance in gynecologic brachytherapy
Live magnetic resonance imaging–ultrasound fusion achieved under 4 mm registration accuracy and under 5 mm needle localization in two clinical implants.
Weekly synthetic computed tomography identified structure-specific replanning triggers in nasopharyngeal carcinoma
Weekly monitoring identified week 2 triggers for nodal targets and contralateral parotids, with later week 4 triggers for primary targets.
K-means rapidly optimized isocenters and margins for polymetastatic stereotactic ablative radiotherapy
K-means matched hybrid optimization for margin volume while reducing median computation time from 306.9 seconds to 0.19 seconds.
Virtual contrast-enhanced MRI matched gadolinium-enhanced imaging for diagnosis, staging, and tumor delineation.
98.98% of virtual contrast-enhanced MRI scans were rated suitable for diagnosis, and 92.33% for tumor delineation.
Physics-constrained network improved cone-beam computed tomography reconstruction from orthogonal pelvic radiographs
A physics-constrained network reconstructed pelvic cone-beam computed tomography from two simulated radiographs with substantially lower error than generative baselines.
Respiratory gating limited accumulated motion-related dose errors in proton therapy for hepatocellular carcinoma
Respiratory gating more than halved cranio-caudal motion, while motion-related target-dose deviations largely diminished after accumulation across more than three fractions.
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.
Surface scans showed modest average but substantial individual breast deformation during radiotherapy
Mean treated-breast displacement was 1.6 mm, with larger patient-specific changes near treatment completion and during follow-up.
A 3D-printed jig enabled small-animal irradiation with clinical iridium-192
A 3D-printed jig delivered approximately uniform iridium-192 tumor dose, delayed tumor growth, and caused no observable short-term radiation toxicity in mice.
Hybrid respiratory gating mitigated interplay in spot-scanning proton therapy
Hybrid phase-amplitude gating restored dose agreement during regular motion, while irregular breathing increased treatment time and produced inconsistent accuracy.
Off-axis beam optimization reduced lung dose in posterior lung stereotactic body radiotherapy
Off-axis beam optimization preserved target coverage while reducing lung dose and enabling collision-free beam geometry for posterior lung lesions.
Robust optimization reduced organ doses in long-course lung radiotherapy
Robust optimization preserved target coverage while reducing lung, heart, esophageal, spinal cord, and estimated immune-cell dose during long-course lung radiotherapy.