Utilisation of intensity modulated radiotherapy in England

This tool presents the number of radiotherapy episodes treated with IMRT in England.

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Data for this tool is based on patient-level information collected by the NHS, as part of the care and support of cancer patients. The data is collated, maintained and quality assured by the National Cancer Registration and Analysis Service, which is part of Public Health England (PHE).

The Radiotherapy Data Set (RTDS) is an existing standard requiring all NHS Acute Trust providers of radiotherapy services in England to collect and submit standardised data monthly against a nationally defined dataset. The purpose of the standard is to collect consistent and comparable data across all NHS Acute Trust providers of radiotherapy services in England in order to provide intelligence for service planning, commissioning, clinical practice and research and the operational provision of radiotherapy services across England since April 2009. The management and delivery of the RTDS was the responsibility of the National Clinical Analysis and Specialised Applications Team (NATCANSAT) until 31st March 2016. Public Health England took full responsibility for the RTDS on 1st April 2016.

Intensity Modulated Radiotherapy (IMRT) is a type of conformal radiotherapy which delivers precise radiation doses to a tumour while minimising the dose to surrounding tissue. It uses small beams of varying strength to shape the radiation beams to match the tumour. The data presented in this tool represents the number of IMRT episodes delivered between 1st April 2014 and 31st March 2020. Data is not presented from 2009 as treatment intent only became a mandatory field in April 2014. Intent is required to identify IMRT.

The completeness of radiotherapy activity data varies by trust. Figures reported in the tool may differ from previously reported activity.

Cancer Alliances

The tool presents radiotherapy activity data across Cancer Alliances in England. The Cancer Alliance names refer to the geographical footprint they cover, accurate as of April 2020. The number of radiotherapy trusts associated to each Cancer Alliance varies across England. Cancer Alliance names may differ from those used in other publications.

Intent of Treatment

Financial year is the period used for reporting radiotherapy activity, running from 1st April to 31st March. The years included in the tool range from 2014-2015 to 2019-2020.

Disease Group

The primary tumour diagnosis code (or the main condition being treated) is classified using the 10th edition of the International Statistical Classification of Diseases and Related Health Problems (ICD-10), a medical classification list produced by the World Health Organisation (WHO). ICD 10 codes have been grouped. ICD-09 radiotherapy diagnosis codes have been mapped to ICD-10 to aid consistency and interpretation.