[1] Royal Marsden Hosp, Acad Dept Diagnost Radiol, Sutton SM2 5PT, Surrey, England
[2] Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA
[3] St James Univ Hosp, Lincoln Wing, Dept Clin Radiol, Leeds LS9 7TF, W Yorkshire, England
[4] Inst Curie, Dept Radiol, F-75005 Paris, France
[5] Royal Marsden NHS Trust, London SW3 6JJ, England
[6] Christie Hosp NHS Trust, Dept Radiol, Manchester M20 4BX, Lancs, England
[7] St Bartholomews Hosp, Acad Dept Diagnost Radiol, London EC1A 7ED, England