Technical Innovations & Patient Support in Radiation Oncology (Mar 2023)
Interobserver variation of clinical oncologists compared to therapeutic radiographers (RTT) prostate contours on T2 weighted MRI
- Gillian Adair Smith,
- Alex Dunlop,
- Sophie E. Alexander,
- Helen Barnes,
- Francis Casey,
- Joan Chick,
- Ranga Gunapala,
- Trina Herbert,
- Rebekah Lawes,
- Sarah A. Mason,
- Adam Mitchell,
- Jonathan Mohajer,
- Julia Murray,
- Simeon Nill,
- Priyanka Patel,
- Angela Pathmanathan,
- Kobika Sritharan,
- Nora Sundahl,
- Rosalyne Westley,
- Alison C. Tree,
- Helen A. McNair
Affiliations
- Gillian Adair Smith
- The Royal Marsden NHS Foundation Trust, London, United Kingdom; Corresponding author at: The Royal Marsden, Downs Road, Sutton, Surrey SM2 5PT, United Kingdom.
- Alex Dunlop
- Joint Department of Physics at the Royal Marsden and The Institute of Cancer Research, United Kingdom
- Sophie E. Alexander
- The Institute of Cancer Research/The Royal Marsden NHS Foundation Trust, London, United Kingdom
- Helen Barnes
- The Royal Marsden NHS Foundation Trust, London, United Kingdom
- Francis Casey
- Joint Department of Physics at the Royal Marsden and The Institute of Cancer Research, United Kingdom
- Joan Chick
- Joint Department of Physics at the Royal Marsden and The Institute of Cancer Research, United Kingdom
- Ranga Gunapala
- Clinical Trials and Statistic Unit, The Institute for Cancer Research, London, United Kingdom
- Trina Herbert
- The Royal Marsden NHS Foundation Trust, London, United Kingdom
- Rebekah Lawes
- The Royal Marsden NHS Foundation Trust, London, United Kingdom
- Sarah A. Mason
- Joint Department of Physics at the Royal Marsden and The Institute of Cancer Research, United Kingdom
- Adam Mitchell
- Joint Department of Physics at the Royal Marsden and The Institute of Cancer Research, United Kingdom
- Jonathan Mohajer
- Joint Department of Physics at the Royal Marsden and The Institute of Cancer Research, United Kingdom
- Julia Murray
- The Institute of Cancer Research/The Royal Marsden NHS Foundation Trust, London, United Kingdom
- Simeon Nill
- Joint Department of Physics at the Royal Marsden and The Institute of Cancer Research, United Kingdom
- Priyanka Patel
- The Institute of Cancer Research/The Royal Marsden NHS Foundation Trust, London, United Kingdom
- Angela Pathmanathan
- The Institute of Cancer Research/The Royal Marsden NHS Foundation Trust, London, United Kingdom
- Kobika Sritharan
- The Institute of Cancer Research/The Royal Marsden NHS Foundation Trust, London, United Kingdom
- Nora Sundahl
- The Institute of Cancer Research/The Royal Marsden NHS Foundation Trust, London, United Kingdom
- Rosalyne Westley
- The Institute of Cancer Research/The Royal Marsden NHS Foundation Trust, London, United Kingdom
- Alison C. Tree
- The Institute of Cancer Research/The Royal Marsden NHS Foundation Trust, London, United Kingdom
- Helen A. McNair
- The Institute of Cancer Research/The Royal Marsden NHS Foundation Trust, London, United Kingdom
- Journal volume & issue
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Vol. 25
p. 100200
Abstract
The implementation of MRI-guided online adaptive radiotherapy has enabled extension of therapeutic radiographers’ roles to include contouring. An offline interobserver variability study compared five radiographers’ and five clinicians’ contours on 10 MRIs acquired on a MR-Linac from 10 patients. All contours were compared to a “gold standard” created from an average of clinicians’ contours. The median (range) DSC of radiographers’ and clinicians’ contours compared to the “gold standard” was 0.91 (0.86–0.96), and 0.93 (0.88–0.97) respectively illustrating non-inferiority of the radiographers’ contours to the clinicians. There was no significant difference in HD, MDA or volume size between the groups.
