Transcranial Sonography of the Substantia Nigra in Japanese Patients with Parkinson's Disease or Atypical Parkinsonism: Clinical Potential and Limitations

Abstract

The present study confirmed that TCS of the SN is potentially useful in the investigation of Japanese patients, and it provides a better differential diagnosis between PD and atypical parkinsonism. The recording failure of TCS in aged, particularly female subjects, may limit the clinical potential of TCS of the SN in Japanese patients.