title: [The value of ultrasound imaging of the substantia nigra in the differential diagnosis of Parkinson's disease].
authors.forename: A
authors.initials: A
authors.lastname: Arjona
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D010300:Parkinson Disease / Q000175:diagnosis* / Q000000981:diagnostic imaging* / Q000473:pathology; D013378:Substantia Nigra / Q000000981:diagnostic imaging* / Q000473:pathology; D014463:Ultrasonography