Imaging psoas sign (spondylodiskitis)
The imaging psoas sign is an MRI finding specific for spondylodiskitis and is seen as T2 hyperintensity in the psoas major muscle. The sign has a high sensitivity (92%) and specificity (92%) for spondylodiskitis and in the clinical context of a suspected infective process of the spine supports confidence in diagnosing spondylodiskitis 1.
History and etymology
The imaging psoas sign was first described in 2016 by Luke Ledbetter, an American neuroradiologist and colleagues 1.