1. Physical Measurement Laboratory National Institute of Standards and Technology Boulder Colorado USA
2. Center for Devices and Radiological Health US Food and Drug Administration Silver Spring Maryland USA
3. Dept of Biomedical Engineering Case Western Reserve University Cleveland Ohio USA
4. Department of Radiology Stanford University Stanford California USA
5. Department of Biomedical Data Science Stanford University Stanford California USA
6. University Hospital of Zurich and University of Zurich Zurich Switzerland
7. Cancer Research UK Cancer Imaging Centre Division of Radiotherapy and Imaging The Institute of Cancer Research London UK
8. MRI Unit Royal Marsden NHS Foundation Trust Sutton Surrey UK