RCR12: Patterns of IMRT delivery in England in 2014
1cardiff university, cardiff, UK,2clatterbridge Cancer Centre, liverpool, UK,3queens university belfast, belfast, UK,4velindre cancer centre, cardiff, UK
Over the last 10 years modernisation of UK radiotherapy equipment has given the vast majority of centres the ability to deliver intensity modulated radiotherapy (IMRT). Previous Department of Health in England guidance has suggested that 33% of all radical radiotherapy treatments should be delivered using IMRT, 24% delivered using inverse planned IMRT. Using the NATCANSAT National Radiotherapy Dataset (NATCANSAT-RTDS), rates of IMRT delivery (including volumetric arc therapy) in centres across England are reported to provide a benchmark of the progress of IMRT implementation to date and to guide to any potential future clinical IMRT targets.
Using the NATCANSAT-RTDS database the numbers of all radical treatments (neo-adjuvant, primary curative and adjuvant) and the proportion of those receiving inversed planned IMRT were recorded for all tumour sites and for each centre over the period 1st December 2013 to 28th February 2014 for all registered English centres (n=50).
During the study period, 17157 radical treatments were delivered of which 6226 (36%) were delivered by IMRT. In seven centres with the greatest volume of radical treatments, there were 5378 radical treatments, 33.5% by IMRT. The most IMRT active tumour sites were prostate and head and neck cancer 88% and 78% of all treatments in England were delivered using IMRT, respectively. Rectum and breast had the least inversed planned IMRT activity, 15% and 10% respectively.
IMRT delivery in England has now met and exceeded previous national targets. New tumour site specific targets are needed to guide further IMRT service development.