Scalpel sign

The scalpel sign is a radiological finding on sagittal MRI sequences and is named for the scalpel-like deformity of the Spinal cord. The scalpel sign may be a radiological indicator of spinal arachnoid adhesions[^1].

Imaging

Scalpel sign on MRI
MRI images showing a scalpel sign in the thoracic spine. Figure adapted from Reardon et al. (2013).

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