Radiation therapy quality assurance in head and neck radiotherapy - Moving forward.

Head and Neck Cancer (HNC) radiation oncologists (ROs) enjoy the immense pleasure of curing patients, working within a large multidisciplinary team to effectively deliver curative intent treatment whilst also aiming to minimise late treatment toxicity. Secondary analyses of large-scale HNC clinical trials have shown the critical impact of the quality of radiotherapy plans, where protocol non-compliant plans have yielded inferior survival rates approximating 20%. The peer review process in routine day-to-day HNC practice shows that even in major academic centers a significant proportion of RT plans may require changes to the radiotherapy planning volume. Optimising the therapeutic ratio in HNC has been dramatically facilitated by intensity modulated radiotherapy (IMRT), but that technology has also increased the complexity of HNC radiotherapy treatment and high-volume centers with experienced clinicians may be best placed to deliver this most accurately. International consensus guidelines to standardise or benchmark best practice with respect to the RT-QA process in HNC are needed. The aim of this paper is to highlight the importance of the RT-QA process in the HNC treatment process and to make some recommendations for its inclusion in both clinical trials and routine clinical practice.

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