You could be reading the full-text of this article now if you...

If you have access to this article through your institution,
you can view this article in

Reversed Halo Sign

Walker, Christopher M. MD; Mohammed, Tan-Lucien MD, FCCP; Chung, Jonathan H. MD

Journal of Thoracic Imaging:
doi: 10.1097/RTI.0b013e318224cfbc
Web Exclusive Content-Signs in Cardiopulmonary Imaging