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 .

History and etymology

The imaging psoas sign was first described in 2016 by Luke Ledbetter, an American neuroradiologist and colleagues .