作者单位:Department of Clinical Radiology, St. George's Hospital, London, United Kingdom, Joint Department[1]Imaging Department, St. Bartholomew's Hospital, West Smithfield, London, United Kingdom[2]Academic Department of Diagnostic Radiology, Royal Marsden Hospital, Sutton, Surrey, United Kingdom[3]Department of Clinical Radiology, St. George's Hospital, London, United Kingdom[4]