PO-0809: Implementing a novel online education programme to support RTQA – the EMBRACE-II experience

Duke, S.; Jensen, Nathan C.; Rumpold, Tamara; Leeuw, Astrid de; Lindegaard, Jacob Christian; Tanderup, Kari; Potter, Richard; Nout, Remi A.; Jurgenliemk-Schultz, I.; Tan, Liang

doi:10.1016/s0167-8140(18)31119-8

Cited by 2 publications

(3 citation statements)

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“…indicates a good level of agreement [2]. However, previous studies have demonstrated discrepancies between contours considered to be acceptable based on expert review and the results of overlap measure comparisons [31]. In this study, 92% of the post-workshop contours were considered to be acceptable/within acceptable variation while 75% of structures had a DSC >0.7.…”

Section: Discussionmentioning

confidence: 68%

“…Qualitative feedback can be provided detailing acceptable/unacceptable variation from the protocol and a similar process was used in this study for feedback on post-workshop contours [3,[40][41][42]. However, this approach may be time consuming and an efficient/reliable method of assessment which can identify clinically relevant discrepancies is needed [1,16,31].…”

Section: Discussionmentioning

confidence: 99%

“…When planning a contouring workshop, the following considerations may be relevant based on prior recommendations/the authors' experience [3,16,20,31,44]:…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of the impact of teaching on delineation variation during a virtual stereotactic ablative radiotherapy contouring workshop

et al. 2021

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Introduction: Variation in delineation of target volumes/organs at risk (OARs) is well recognised in radiotherapy and may be reduced by several methods including teaching. We evaluated the impact of teaching on contouring variation for thoracic/pelvic stereotactic ablative radiotherapy (SABR) during a virtual contouring workshop. Materials and methods: Target volume/OAR contours produced by workshop participants for three cases were evaluated against reference contours using DICE similarity coefficient (DSC) and line domain error (LDE) metrics. Pre- and post-workshop DSC results were compared using Wilcoxon signed ranks test to determine the impact of teaching during the workshop. Results: Of 50 workshop participants, paired pre- and post-workshop contours were available for 21 (42%), 20 (40%) and 22 (44%) participants for primary lung cancer, pelvic bone metastasis and pelvic node metastasis cases, respectively. Statistically significant improvements post-workshop in median DSC and LDE results were observed for 6 (50%) and 7 (58%) of 12 structures, respectively, although the magnitude of DSC/LDE improvement was modest in most cases. An increase in median DSC post-workshop ≥0·05 was only observed for GTVbone, IGTVlung and SacralPlex, and reduction in median LDE > 1 mm was only observed for GTVbone, CTVbone and SacralPlex. Post-workshop, median DSC values were >0·7 for 75% of structures. For 92% of the structures, post-workshop contours were considered to be acceptable or within acceptable variation following review by the workshop faculty. Conclusions: This study has demonstrated that virtual SABR contouring training is feasible and was associated with some improvements in contouring variation for multiple target volumes/OARs.

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Section: Discussionmentioning

confidence: 68%