Aims: To assess the impact of weekly scheduled peer review of head and neck contours for definitive and adjuvant radiotherapy cases based on rates of recommended changes.
Materials And Methods: Retrospective analysis of a prospective database. Recommended changes were prospectively classified as 'major' (change in gross tumour volume and/or high-dose clinical target volume, dose/fractionation) or 'minor' (change in intermediate or elective dose clinical target volumes or organs at risk). Univariate analysis to explore associations between recommended changes and tumour site/stage and radical/adjuvant indication.
Results: In total, 307/375 (82%) head and neck cases treated with volumetric-modulated arc therapy were prospectively peer reviewed over a 12-month period; 195 (64%) cases received definitive and 112 (36%) received adjuvant radiotherapy. Overall, 43/307 (14.0%) changes were recommended within the peer review meetings. This comprised 27/307 (8.8%) major changes and 16/307 (5.2%) minor changes; 33/43 (77%) changes were in the clinical target volume. Rates of recommended changes were significantly higher for adjuvant versus definitive radiotherapy (odds ratio 2.26, P = 0.014) and for larynx compared with oropharynx (odds ratio 3.02, P = 0.02). There was no overall correlation between clinician experience and rates of change (P = 0.62).
Conclusion: Routine weekly meeting contour-based peer review resulted in a number of major and minor changes to treatment. Compliance was high. Peer review was potentially beneficial for all tumour sites/stages/indications and any degree of clinician experience.
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