Kilovoltage intrafraction monitoring for real-time image guided adaptive radiotherapy reduces total dose for lung SABR.
This study presents estimation of typical kV fluoroscopic imaging doses for image-guided real-time adaptive radiotherapy. For a cohort of 10 lung SABR patients the estimated imaging dose to ipsi-lateral lung with real-time adaptation is 9.9-15.1cGy, which is less than the extra lung dose from treatment with potentially larger ITV-based PTV approach.
Northern Sydney Cancer Centre, Level 1 Royal North Shore Hospital, Australia; University of Sydney, Schools of Physics or Medicine, Australia.
Prabhjot
P
Juneja
Northern Sydney Cancer Centre, Level 1 Royal North Shore Hospital, Australia; University of Sydney, Schools of Physics or Medicine, Australia.
Vincent
V
Caillet
University of Sydney, Schools of Physics or Medicine, Australia.
Tom
T
Shaw
Northern Sydney Cancer Centre, Level 1 Royal North Shore Hospital, Australia.
Judith
J
Martland
Northern Sydney Cancer Centre, Level 1 Royal North Shore Hospital, Australia; University of Sydney, Schools of Physics or Medicine, Australia. Electronic address: Jeremy.Booth@health.nsw.gov.au.
Jeremy T
JT
Booth
D019583:Dose Fractionation, Radiation; D005471:Fluoroscopy; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008175:Lung Neoplasms / Q000532:radiotherapy*; D019047:Phantoms, Imaging; D015641:Radiography, Interventional / Q000379:methods*; D016634:Radiosurgery / Q000379:methods*; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted / Q000379:methods; D061089:Radiotherapy, Image-Guided / Q000379:methods*; D012189:Retrospective Studies
Imaging dose; Lung cancer; MLC tracking; Real time adaptive radiotherapy