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dc.contributor.authorBeasley, William J
dc.contributor.authorMcWilliam, Alan
dc.contributor.authorSlevin, Nicholas J
dc.contributor.authorMackay, Ranald I
dc.contributor.authorvan Herk, Marcel
dc.date.accessioned2016-12-16T15:50:39Z
dc.date.available2016-12-16T15:50:39Z
dc.date.issued2016-12-21
dc.identifier.citationAn automated workflow for patient-specific quality control of contour propagation. 2016, 61 (24):8577-8586 Phys Med Biolen
dc.identifier.issn1361-6560
dc.identifier.pmid27880733
dc.identifier.doi10.1088/1361-6560/61/24/8577
dc.identifier.urihttp://hdl.handle.net/10541/620056
dc.description.abstractContour propagation is an essential component of adaptive radiotherapy, but current contour propagation algorithms are not yet sufficiently accurate to be used without manual supervision. Manual review of propagated contours is time-consuming, making routine implementation of real-time adaptive radiotherapy unrealistic. Automated methods of monitoring the performance of contour propagation algorithms are therefore required. We have developed an automated workflow for patient-specific quality control of contour propagation and validated it on a cohort of head and neck patients, on which parotids were outlined by two observers. Two types of error were simulated-mislabelling of contours and introducing noise in the scans before propagation. The ability of the workflow to correctly predict the occurrence of errors was tested, taking both sets of observer contours as ground truth, using receiver operator characteristic analysis. The area under the curve was 0.90 and 0.85 for the observers, indicating good ability to predict the occurrence of errors. This tool could potentially be used to identify propagated contours that are likely to be incorrect, acting as a flag for manual review of these contours. This would make contour propagation more efficient, facilitating the routine implementation of adaptive radiotherapy.
dc.language.isoenen
dc.rightsArchived with thanks to Physics in medicine and biologyen
dc.titleAn automated workflow for patient-specific quality control of contour propagation.en
dc.typeArticleen
dc.contributor.departmentDivision of Molecular and Clinical Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK.en
dc.identifier.journalPhysics in Medicine and Biologyen
html.description.abstractContour propagation is an essential component of adaptive radiotherapy, but current contour propagation algorithms are not yet sufficiently accurate to be used without manual supervision. Manual review of propagated contours is time-consuming, making routine implementation of real-time adaptive radiotherapy unrealistic. Automated methods of monitoring the performance of contour propagation algorithms are therefore required. We have developed an automated workflow for patient-specific quality control of contour propagation and validated it on a cohort of head and neck patients, on which parotids were outlined by two observers. Two types of error were simulated-mislabelling of contours and introducing noise in the scans before propagation. The ability of the workflow to correctly predict the occurrence of errors was tested, taking both sets of observer contours as ground truth, using receiver operator characteristic analysis. The area under the curve was 0.90 and 0.85 for the observers, indicating good ability to predict the occurrence of errors. This tool could potentially be used to identify propagated contours that are likely to be incorrect, acting as a flag for manual review of these contours. This would make contour propagation more efficient, facilitating the routine implementation of adaptive radiotherapy.


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