Maskless SGRT improved initial pelvic setup and shortened positioning time
Maskless SGRT reduced initial setup error and cut mean positioning time by about 29% compared with thermoplastic-mask alignment.
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Surface monitoring detected clinically relevant motion in head and neck radiotherapy
SGRT triggered verification in 15% of head and neck fractions, but almost half of alerts were not confirmed on X-ray imaging.
Dose-guided positioning optimized proton target coverage within three minutes
Automated dose-guided positioning matched anatomical alignment overall and improved primary target coverage by 1.0% when the clinical goal was initially missed.
SGRT reduced pelvic pitch and longitudinal setup errors in vulvar radiotherapy
In 20 vulvar cancer patients, SGRT reduced pitch error from 1.21° to 0.07° and longitudinal error from 4.9 to 0.4 mm.
Surface guidance matched skin marks for breast setup and reduced positioning variability
Single-camera surface guidance provided comparable mean setup accuracy with less variability, while intrafraction breast motion remained below 3 mm in most observations.
Head and neck positioning management should extend beyond couch correction
Rigid couch correction cannot fully resolve regional posture mismatch, immobilization failure or progressive anatomical change during head and neck radiotherapy.
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.
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.
Dual-scan conformal cone-beam computed tomography improves target-region image quality
Dynamic collimation improved target-region contrast and signal-to-noise ratio while preserving full-field information without increasing the total photon budget.
Patient-led genital positioning improved comfort and modesty during thigh sarcoma radiotherapy
A reusable positioning pouch displaced the genitalia from the treatment field while receiving high satisfaction ratings from patients and radiation therapists.