1. Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
2. Siemens Healthineers, East Walpole, MA
3. Department of Thoracic Surgery, Brigham and Women's Hospital, Harvard Medical School, MA
4. Present address: Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Ave, Boston, MA 02115