1 Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts. Electronic address: MCHENG0@mgh.harvard.edu.
2 Department of Radiology, University of Washington School of Medicine, Department of Health Systems & Population Health, University of Washington School of Medicine, Fred Hutchinson Cancer Center, Seattle, Washington; Director of the Northwest Screening and Cancer Outcomes Research Enterprise at the University of Washington and Deputy Editor of JACR.