Abstract
Aims: The aim of this work was to investigate the distortion correction feature of a dedicated Siemens Espree 1.5T MRI scanner for use in radiotherapy treatment planning. This application of MRI requires a high degree of spatial accuracy to allow fusion of CT and MRI images to improve tumour delineation. Commercially available phantoms did not satisfy requirements as they did not allow testing over a sufficiently large field of view, and needed repositioning between scans to image different planes.
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