1 New York-Presbyterian Hospital/Weill Cornell Medical Center, Department of Radiology, 425 East 61st Street, 9th floor, New York, NY 10065, United States of America. Electronic address: ela9033@med.cornell.edu.
2 University of Alabama at Birmingham, Department of Radiology, 619 19th Street South, Birmingham, AL 35249, United States of America. Electronic address: kkporter@uabmc.edu.