Substantia nigra hypoechogenicity in friedreich ataxia

Movement Disorders, Article first published online: 9 DEC 2011 | DOI: 10.1002/mds.23989

Heike Stockner MD, Martin Sojer MD, Sascha Hering MD, Wolfgang Nachbauer MD, Klaus Seppi MD, Christoph Schmidauer MD, Werner Poewe MD, Sylvia