title: Frameless high dose rate stereotactic lung radiotherapy: intrafraction tumor position and delivery time.
abstract: Intrafraction change in tumor position (Δ) was evaluated for stereotactic lung radiotherapy delivered with flattening filter free volumetric modulated arc therapy. In 140 fractions from 32 patients mean Δ (±SD) was -0.7±1.4 mm (vertical), -0.7±1.3 mm (longitudinal) and +0.2±1.2 mm (lateral) with mean vector 2.1±1.2 mm. Mean delivery time was 4.4±3.4 min (mean beam-on 1.9±0.4 min).
authors.affiliation: Department of Radiation Oncology, VU University Medical Center, Amsterdam, The Netherlands.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Peguret
authors.forename: Max
authors.initials: M
authors.lastname: Dahele
authors.forename: Johan P
authors.initials: JP
authors.lastname: Cuijpers
authors.forename: Ben J
authors.initials: BJ
authors.lastname: Slotman
authors.forename: Wilko F A R
authors.initials: WF
authors.lastname: Verbakel
mesh_terms: D000368:Aged; D054893:Cone-Beam Computed Tomography; D019583:Dose Fractionation, Radiation; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D008297:Male; D016634:Radiosurgery / Q000379:methods*; D013997:Time Factors
keywords: Flattening filter free; Intrafraction motion; Lung cancer; SBRT