A multicentre observational study evaluating image-guided radiotherapy for more accurate partial-breast intensity-modulated radiotherapy: comparison with standard imaging technique oleh Emma J Harris, Mukesh Mukesh, Rajesh Jena, Angela Baker, Harry Bartelink, Corrinne Brooks, June Dean, Ellen M Donovan, Sandra Collette, Sally Eagle, John D Fenwick, Peter H Graham, Jo S Haviland, Anna M Kirby, Helen Mayles, Robert A Mitchell, Rosalind Perry, Philip Poortmans, Andrew Poynter, Glyn Shentall, Jenny Titley, Alistair Thompson, John R Yarnold, Charlotte E Coles, Philip M Evans, on behalf of the IMPORT Trials Management Group