title: Degeneration of substantia nigra in chronic Parkinson's disease visualized by transcranial color-coded real-time sonography.
abstract: To detect morphologic abnormalities in Parkinson's disease (PD), we examined 30 patients with PD and 30 age- and sex-matched nonparkinsonian controls by transcranial color-coded real-time sonography (TCCS). In 12 severely affected PD patients, the echogenicity of the substantia nigra was distinctly increased. In the remaining 18 PD patients and in all controls, the substantia nigra was poorly visualized or nondetectable by TCCS. The degree of hyperechogenicity of the substantia nigra closely correlated with the severity and duration of PD (p < 0.001). The increased echogenicity of the substantia nigra notably results from nigral gliosis and reflects the stage of degeneration.
authors: Neurologische Universitätsklinik Würzburg, Germany.
authors: G
authors: G
authors: Becker
authors: J
authors: J
authors: Seufert
authors: U
authors: U
authors: Bogdahn
authors: H
authors: H
authors: Reichmann
authors: K
authors: K
authors: Reiners
mesh_terms: D000368:Aged; D000978:Antiparkinson Agents / Q000627:therapeutic use; D005260:Female; D006801:Humans; D008297:Male; D009460:Neurologic Examination; D010300:Parkinson Disease / Q000000981:diagnostic imaging* / Q000188:drug therapy / Q000503:physiopathology; D013378:Substantia Nigra / Q000033:anatomy & histology / Q000000981:diagnostic imaging* / Q000473:pathology; D017585:Ultrasonography, Doppler, Transcranial
chemical_list: D000978:Antiparkinson Agents