1. Center for Gastrointestinal Malignancies, MedStar Washington Hospital Center, Washington, DC, USA;
2. Mercy Cancer Care, Baltimore, MD, USA;
3. Department of Radiology, The Royal Marsden NHS Foundation Trust NIHR BRC and Imperial College London, Surrey, UK;
4. Department of Radiology, CHUV, University Hospital, Lausanne, Switzerland;
5. Department of Radiology, Centre Hospitalier Lyon Sud, Lyon, France;
6. Department of Radiology, MedStar Washington Hospital Center, Washington, DC, USA