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Clinical implementation of an MR-Sim in radiotherapy

Chris Forrest MR-Sim MRI radiotherapy Richard Speight Sarah Whittle

MRI has had an emerging role in radiotherapy (RT) for a number of years, providing improved visualisation of the tumour and organs at risk (OAR) when compared with CT to improve contouring accuracy. A project team was established in 2016 to procure an MRI scanner designed specifically for RT planning to improve treatment accuracy. MRI allows reduced planning margins and dose escalation when incorporated into the (RT) pathway, helping to improve patient outcomes, including improved cancer cure rates and reduced side effects. Initially with CT and MR images fused together, with the longer-term goal of MRI-only pathways, Leeds Hospitals Charity launched a £2.4 million ‘MR-Sim’ fund-raising appeal, achieving that target in 2019.

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