In the posterior ...
Axial SWI
In the posterior third of the substantia nigra of the midbrain, there is loss of the swallow tail sign (loss of bright signal within nigrosome 1)
Modality: MRI (SWI)

- “ Illustrations courtesy of Dr. Afra Alfalahi ”

View full size version of Loss of swallow tail sign in Parkinson disease

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.