Rim sign in pulmonary infarction
The rim sign in pulmonary infarction is seen on PET-CT with very mild peripheral continuous FDG uptake and the complete absence of central uptake. This is a different appearance to that seen in lung abscesses or necrotic tumors, whereby the peripheral FDG-avidity is marked.
History and etymology
It was first described in 2012 by Michael Soussan, a French nuclear physician at the University of Paris 1.