Nigrosome 1 absence in de novo Parkinson disease

Affiliations

• ¹ From the Departments of Neurology (M.B., D.L.) and Radiology (J.P., D.P.) and Advanced Imaging Research Center (W.R.), Oregon Health & Science University, Portland; and Siemens Medical Solutions (J.G.), Malvern, PA. brodskym@ohsu.edu.
• ² From the Departments of Neurology (M.B., D.L.) and Radiology (J.P., D.P.) and Advanced Imaging Research Center (W.R.), Oregon Health & Science University, Portland; and Siemens Medical Solutions (J.G.), Malvern, PA.